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  • 1.
    Abtahi, Farhad
    et al.
    KTH-School of Technology and Health.
    Ji, Guangchao
    KTH-School of Technology and Health.
    Lu, Ke
    KTH-School of Technology and Health.
    Rödby, Kristian
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Björlin, Anders
    Kiwok AB.
    Östlund, Anders
    Kiwok AB.
    Seoane, Fernando
    Högskolan i Borås, Akademin för vård, arbetsliv och välfärd. KTH-School of Technology and Health.
    Lindecrantz, Kaj
    KTH-School of Technology and Health.
    Textile-Electronic Integration in Wearable Measurement Garments for Pervasive Healthcare Monitoring2015Konferensbidrag (Övrigt vetenskapligt)
  • 2.
    Abtahi, Farhad
    et al.
    KTH-School of Technology and Health.
    Lu, Ke
    KTH-School of Technology and Health.
    Guangchao, Li
    KTH-School of Technology and Health.
    Rödby, Kristian
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Seoane, Fernando
    Högskolan i Borås, Akademin för vård, arbetsliv och välfärd. KTH-School of Technology and Health.
    A Knitted Garment using Intarsia Technique for Heart Rate Variability Biofeedback: Evaluation of Initial Prototype.2015Konferensbidrag (Övrigt vetenskapligt)
  • 3.
    Agnhage, Tove
    Högskolan i Borås, Akademin för textil, teknik och ekonomi. University Lille 1, France; Soochow University, China.
    Eco-designed functionalization of polyester fabric2017Doktorsavhandling, sammanläggning (Övrigt vetenskapligt)
    Abstract [sv]

    Den höga miljöpåverkan från textilfärgning och efterbehandling, på grund av hög vattenförbrukning, dess förorening, och ineffektiv användning av energi, är idag välkänt. För att minska miljöpåverkan föreslår forskningsvärlden användning av färgämnen från naturliga resurser. Syftet med att använda dessa är att ge nya attribut till textilier utan att göra avkall på miljömässig hållbarhet. Attribut som ges kan vara färg och/eller andra egenskaper. En nackdel är dock att användningen av bio-baserade färgämnen är inte fri från att belasta miljön. Det blir därför av största betydelse att bedöma denna miljöpåverkan och förbättra miljöprofilen. Sådana studier är dock i allmänhet sällsynta.

    Studien som presenteras i denna avhandling har inkluderat miljöpåverkans- bedömning, med hjälp av livscykelanalys (LCA), i designprocessen av en multifunktionell polyester (PET) väv via naturliga antrakinoner. Genom att göra så har ett eko-design tillvägagångssätt använts, med avsikt att bana väg för miljömässigt hållbar bio-funktionalisering av textil.

    Antrakinonerna erhölls från rot extrakt av växten krapp (Rubia tinctorum L.), och hänvisas till som krapp färgämne. Frågeställningar var därför formulerade relaterat till användningen av krapp färgämne. Tre forskningsfrågor har besvarats: (I) Kan krapp färgämne verka multifunktionellt på en PET väv? (II) Hur ser miljöprofilen ut, från färgningsprocessen av PET med krapp färgämne, och hur kan den förbättras? (III) Vilka är de största utmaningarna med att använda LCA för att bedöma miljökonsekvenserna av textilfärgning med växtbaserade färgämnen?

    Det kan konkluderas att det finns potential för krapp färgämne att verka multifunktionellt på PET. Baserat på uppmuntrande resultat är en rekommendation för det framtida arbetet att fokusera på kvalitén hos de attribut som presenterats och deras förbättringspotential, både i färgning via färgbad och via foulard. LCA driven processoptimering av textilfärgningen förbättrade i varje miljöpåverkans- kategori som studerats. Emellertid har flera utmaningar identifierats som måste 

    övervinnas för att LCA skall kunna bidra till en hållbar användning av multifunktionella växtbaserade färgämnen för textil. De största utmaningarna är bristen på tillgängliga data i forskningsstadiet och den tvärvetenskapliga forskningsarenan. Det är tänkt att om dessa utmaningar bemästras kan LCA bidra till en hållbar bio-funktionalisering av textil.

  • 4.
    Artur, Cavaco-Paulo
    et al.
    University of Minho, Braga, Portugal.
    Nierstrasz, VincentHögskolan i Borås, Akademin för textil, teknik och ekonomi.Wang, QiangJiangnan University, Wuxi, China.
    Advances in Textile Biotechnology 2nd Edition2019Samlingsverk (redaktörskap) (Refereegranskat)
    Abstract [en]

    Description

    Advances in Textile Biotechnology, Second Edition examines the latest in biotechnology for the fiber and textile industry. This new edition has been fully revised to include the current essential areas of development in the field, covering both natural and synthetic fibers. Chapters cover the latest technology in bioprocessing for bast fiber, PVA, polyester, wool and silk before exploring issues of enzyme stability. Essential areas of application and development are then considered, including biomedical textiles, silk materials for biotechnological applications, bacterial cellulose, the ink jetting of enzymes, and the role of enzymes, wool and silk fibers.

    Containing groundbreaking research, this book will be essential reading for manufacturers, designers and engineers in the textiles industry, textile and fiber scientists, and academic researchers and postgraduate students working in the area of textile technology.

    Key Features

    • Provides a thorough overview of current and future focuses of biotechnology in the fiber and textile industry
    • Presents fully revised content, with a new focus on biosynthesis and bioprocessing for novel textile fibers, both synthetic and natural
    • Enables readers to understand and utilize the benefits of biotechnology for the manufacture and production of textiles

    Readership

    Textile manufacturers, designers and engineers in the textile industry; textile and fibre scientists; academic researchers and postgraduate students in textile technology; experts in the biology, chemical and environmental engineering industries

  • 5.
    Asadi, Milad
    et al.
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Bashir, Tariq
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Skrifvars, Mikael
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Development of eco-friendly flame retardant polypropylene fibers2017Konferensbidrag (Refereegranskat)
  • 6.
    Backe, Carin
    et al.
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Skelte, Gabrielle
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Piezoelektriska filament: från garn till textil applikation2015Självständigt arbete på grundnivå (kandidatexamen), 10 poäng / 15 hpStudentuppsats (Examensarbete)
    Abstract [sv]

    Piezoelektriska material används flitigt i olika sensorer då de kan generera en mätbar elektrisk signal vid tryck eller töjning. Arbetet utreder hur ett piezoelektriskt garn innehållandes Polyvinyldiflourid (PVDF) påverkas av faktorer som långvarig mekanisk deformation, fukt och värme. Fokus har legat på det piezoelektriska garnets egenskaper men projektet undersöker också hur integrering i tyg samt applicering i en textil produkt fungerar. Det piezoelektriska garnet har utsatts för ett stort antal tester. I de flesta tester har proverna utvärderats genom cyklisk deformation i en extensometer. Det piezoelektriska garnet har undersökts genom experiment i laboratoriemiljö, praktiska tester i textila applikationer samt vid statistisk analys. Det kan konstateras att yttre faktorer så som fukt och temperatur har inverkan på garnets piezoelektriska effekt. Långvariga tester avslöjar hur garnet uppvisar en längdförändring vid deformation som bidrar till garnets minskade signalstyrka. Garnet kan framgångsrikt integreras i tyg genom sömnad vid rätt inställning för stygnlängd, där högre stygnlängd ger bättre resultat. Samma metod kan användas för att konstruera en piezoelektrisk sensor som appliceras i en träningsstrumpa. Slutsatsen av detta arbete är att parametrar som fukt, krypningsbeteende samt strukturell variation i de individuella PVDF-filamenten har en betydande effekt på det piezoelektriska garnets elektriska signal. Potential i garnets förmåga att fungera som sensor kan ses genom att garnet integrerats med tyg på ett framgångsrikt sätt i en träningsstrumpa för mätning av fotnedsättning. Det kvarstår mycket gällande forskning kring piezoelektriska filament och garn. Vidare forskning i ämnet kommer kunna leda till nya innovativa applikationsmöjligheter som kan komma till nytta inom olika delar av samhället, inte minst inom medicinska användningsområden.

  • 7.
    Backe, Carin
    et al.
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Skelte, Gabrielle
    Rundqvist, Karin
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Sandsjö, Leif
    Högskolan i Borås, Akademin för vård, arbetsliv och välfärd.
    Persson, Nils-Krister
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Piezoelektriska strumpor för rörelsemonitorering - En känslighetsanalys2015Ingår i: Abstracts - Medicinteknikdagarna 2015, Svensk förening för medicinsk teknik och fysik , 2015, s. 60-Konferensbidrag (Övrigt vetenskapligt)
  • 8.
    Baghaei, Behnaz
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Development of thermoplastic biocomposites based on aligned hybrid yarns for fast composite manufacturing2015Doktorsavhandling, sammanläggning (Övrigt vetenskapligt)
    Abstract [en]

    The interest in natural fibres as reinforcement for composite materials has been steadily increasing due to their attractive mechanical properties and the possibility of making more eco-friendly materials. Currently, various alternatives are being introduced for commercial applications, as fibres such as hemp, jute and flax exhibit properties, which make them appropriate for structural composite components. Biocomposites offer reductions in weight and cost and have less reliance on foreign oil resources, making them attractive. Several investigations have revealed that the full utilisation of fibre mechanical properties in the final composites can be exploited, provided an aligned fibre orientation is chosen. In fact, a major challenge for natural fibre reinforced composites is to achieve high mechanical performance at competitive prices. The use of commingled/hybrid yarns is one of the more promising methods for manufacturing structural thermoplastic composites.

    Commingled yarns of thermoplastic and reinforcing fibres offer a potential for cost-effective production of composite parts, thanks to reduced applied pressures and impregnation times during processing. Besides economic advantages, there is also direct control over fibre placements and ease of handling of fibres in yarn process. The yarn technologies provide homogenous distribution of reinforcing fibre and matrix. Variation in natural fibre properties has been a major problem facing composite manufacturers, compared to carbon and glass fibres that have well-defined production processes. This issue can be addressed by regenerated cellulose fibres. These fibres can be reproduced easily with high surface evenness and even quality, making it possible to get consistent results, which is not possible with natural fibres. Combination of natural and regenerated cellulose fibre brings together the best of both materials. The end result is a product with superior properties, which could not be obtained by the individual components.

    This thesis describes the development of aligned hybrid yarns with low fibre twist, for high performance natural (hemp) and man-made (Lyocell) cellulose fibre-reinforced biocomposites, suitable for use in structural or semi-structural applications. The properties of composites in terms of fibre orientation, off-axis angle and alkali treatment were investigated, focusing on determining void%, water absorption, mechanical and thermo-mechanical properties. The results show that combining hemp and Lyocell in PLA composite leads to the reduction of moisture absorption and can improve the mechanical properties. The mechanical properties of the composites were highly affected by the fibre direction. The alkali treatment on hemp fibre improved the mechanical properties of the composites.

  • 9.
    Bashir, Tariq
    et al.
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Skrifvars, Mikael
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Persson, Nils-Krister
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    High-strength electrically conductive fibers: functionalization of polyamide, aramid and polyester fibers with PEDOT polymer2017Ingår i: Polymers for Advanced Technologies, ISSN 1042-7147, E-ISSN 1099-1581, Vol. 29, nr 1, s. 310-318, artikel-id 10.1002/pat.4116Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    In this work, high-performance fibers such as aramid (Twaron), polyamide (PA6), polyester (PET), and hybrid Twaron/PA6 fibers were transformed into electroactive fibers by coating them with conjugated polymer, poly(3,4-ethylenedioxythiophene) (PEDOT) through vapor phase polymerization (VPP) method. The VPP is considered as an efficient technique for depositing CPs on different substrates regardless of their lower solubility in various solvents. In this paper, PEDOT-coated high-performance fibers were prepared under already optimized reaction conditions, and then a comparison between electrical, thermal, and mechanical properties of different fibers, before and after coating, was made. The obtained coated fibers were characterized through scanning electron microscope (SEM), thermogravimetric analysis (TGA), 2-probe electrical resistance measurement method, and tensile testing. It was revealed that at particular reaction conditions, all high performance textile substrates were successfully converted into electroactive fibers. The voltage-current (V-I) characteristics showed that PEDOT-coated polyester fibers exhibited highest conductivity value among all other substrate fibers. The active PEDOT layers on high performance fibers could behave as an antistatic coating to minimize the risks associated with static charges at work places. Also, the obtained fibers have potential to be used as smart materials for various medical, sports, and military applications.

  • 10.
    Berggren Torell, Viveka
    Högskolan i Borås, Institutionen Textilhögskolan.
    "It must be a little more close fitting...: On football clothes' contributions to constructions of femininity2012Konferensbidrag (Övrigt vetenskapligt)
  • 11.
    Berggren Torell, Viveka
    et al.
    Högskolan i Borås, Institutionen Textilhögskolan.
    Knuts, Eva
    Soft, colorful and unique2012Konferensbidrag (Övrigt vetenskapligt)
  • 12.
    Biswas, Tuser
    et al.
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Infirri, Rosalinda Sardo
    Hagman, Susanna
    Berglin, Lena
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    An assistive sleeping bag for children with autism spectrum disorder2018Ingår i: Fashion and Textiles, ISSN 2198-0802, Vol. 5, nr 1, artikel-id 18Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Children suffering from autism spectrum disorder are often reported to encounter sleeping disorder several causes such as hypersensitivity as a result of irregular brain and muscle functions. Disturbance in sleep affects not only their health but also daytime activities including the risk of other cognitive and behavioral impairments. Such hindrance in sleep has been demonstrated to treat therapeutically by measures like the application of deep pressure touch and full body vibration which can be beneficially integrated into the sleeping environment such as on the textile-based platform around the bed. With such a vision, this pilot design project aimed to develop a smart textile based sleeping bag incorporated with sensors to detect awakening stage of the child and thereby actuating stimuli for assuaging the child to fall asleep. To serve the purpose, a micro-controllable body movement detection sensor, based on conductive yarns connected to a vibrating motor was prosperously embedded at the interior of the sleeping bag along with weighted slots to exert deep touch and soothing sensation in the form of wearable technology.

  • 13.
    Biswas, Tuser
    et al.
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Yu, Junchun
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Nierstrasz, Vincent
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Effects of ink characteristics and piezo-electric inkjetting parameters on lysozyme activity2019Ingår i: Scientific Reports, ISSN 2045-2322, E-ISSN 2045-2322, Vol. 9, nr 18252Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Inkjet printing of enzymes can facilitate many novel applications where a small amount of materials need to be deposited in a precise and flexible manner. However, maintaining the satisfactory activity of inkjet printed enzyme is a challenging task due to the requirements of ink rheology and printhead parameters. Thus to find optimum inkjetting conditions we studied the effects of several ink formulation and jetting parameters on lysozyme activity using a piezoelectric printhead. Within linear activity range of protein concentrations ink containing 50 µg/mL lysozyme showed a satisfactory activity retention of 85%. An acceptable activity of jetted ink was found at pH 6.2 and ionic strength of 0.06 molar. Glycerol was found to be an effective viscosity modifier (10–15 mPa.s), humectant and protein structure stabilizer for the prepared ink. A non-ionic surfactant when used just below critical micelle concentration was found to be favourable for the jetted inks. An increase in activity retention was observed for inks jetted after 24 hours of room temperature incubation. However, no additional activity was seen for inkjetting above the room temperature. Findings of this study would be useful for formulating other protein-based inks and setting their inkjet printing parameters without highly compromising the functionality.

  • 14.
    Biswas, Tuser
    et al.
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Yu, Junchun
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Nierstrasz, Vincent
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Inkjetting of Enzymes: Chapter 122019Ingår i: Advance in Textile Biotechnology 2nd edition / [ed] Artur Cavaco-Paulo, Vincent Nierstrasz, Qiang Wang, Elsevier, 2019Kapitel i bok, del av antologi (Refereegranskat)
  • 15.
    Björk, Annika
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Inse mitt värde och behåll mig en stund till: Ett undersökande projekt i hållbar textildesign2015Självständigt arbete på grundnivå (kandidatexamen), 10 poäng / 15 hpStudentuppsats (Examensarbete)
    Abstract [sv]

     Inse mitt värde och behåll mig en stund till är ett utforskande projekt i hållbar textildesign. Huvudfokuset i projektet är att utforska vilka möjliga designlösningar som kan ge produkter egenskapen av föränderlighet och på så vis möjliggöra en förlängning av deras livscykler. Detta undersöks utifrån ett eget formulerat förhållningssätt till hållbar design, genom praktiska experimentella undersökningar av olika material och föränderliga mönsterbilder. Detta kombinerat med att ge konsumenten en aktiv roll i förändring av en produkts utseende och funktion. Projektet resulterar i tre produktprototyper som på olika sätt gestaltar föränderlighet och det formulerade förhållningssättet. 1. Mossa, en tröja gjord av rundstickat, jacquard trikåtyg med materialkombinationen Sally Fox bomull och oblekt bomull. Textilen är ett följsamt mjukt tyg med en mönsterbild som ändrar nyans för varje gång konsumenten tvättar den. 2. Kotte, ett påslakan och örngott gjord av en fem-skaftad satängväv i jacquard- teknik. En textil där mönsterbild och färg inverteras på den aviga sidan. Sängklädernas estetiska uttryck kan förnyas av konsumenten själv genom växtfärgning. 3. Bark, en ullfilt gjord av flatstickad dubbelrelief stickning med olika maskstorlekar i jacquardteknik. Filten kan transformeras av konsumenten själv, genom tvättning, och då få en ny funktion som matta. Den går då från en mjuk, tvådimensionell och följsam textil till en kompakt, tredimensionell tålig textil.

  • 16.
    Bredies, Katharina
    Högskolan i Borås, Akademin för textil, teknik och ekonomi. Universität der Künste Berlin.
    Explorations on Textile Electronics2017Rapport (Övrigt vetenskapligt)
    Abstract [en]

    In electronic textiles, we apply production techniques from both textiles and electronic engineering to bridge the gap between these two very different materials. While it is obvious to apply electronic engineering to textiles to ensure the working of the electronic components, the application of textile production techniques to electronics is still challenging. Yet it is in the appropriation of textile manufacturing that there is a huge potential for innovation. This potential does not only cover the means of production, but also the way we interact with digital interfaces as well as the overall aesthetic of those interfaces.

    This report documents the application of textile production techniques for sensing and actuation in e-textile structures and artifacts. It shows how weaving and knitting on industrial machines can be used to design and build electronic elements in a textile shape, such as pressure sensors, speaker coils and shape change structures. The report also documents the application of those techniques in two different prototypes, the first being a sensor glove that was used for gesture recognition, and the second being woven textile muscle that was developed as the basis for a soft textile robot.

     

  • 17.
    Carlsson, Jan
    et al.
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Gwilt, Alison
    Sheffield Hallam University, UK.
    Larsson, Jonas
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Mattila, Heikki
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Pal, Rudrajeet
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Torstensson, Håkan
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Lidström, Anna
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Feasibility of conditional design: Organizing a circular textile value chain by design principles2017Rapport (Övrigt vetenskapligt)
  • 18.
    Cheng, Jingyuan
    et al.
    German Research Center for Artificial Intelligence (DFKI).
    Zhou, Bo
    German Research Center for Artificial Intelligence (DFKI).
    Lukowicz, Paul
    German Research Center for Artificial Intelligence (DFKI).
    Seoane, Fernando
    Högskolan i Borås, Akademin för textil, teknik och ekonomi. Högskolan i Borås, Akademin för vård, arbetsliv och välfärd. Karolinska Institutet.
    Varga, Matija
    ETH Zurich.
    Mehmann, Andreas
    ETH Zurich.
    Chabrecek, Peter
    SEFAR AG.
    Gaschler, Werner
    SEFAR AG.
    Goenner, Karl
    ITV Denkendorf.
    Horter, Hansjürgen
    ITV Denkendorf.
    Schneegass, Stefan
    Hassib, Mariam
    University of Stuttgart.
    Schmidt, Albrecht
    University of Stuttgart.
    Freund, Martin
    University of Passau.
    Zhang, Rui
    University of Passau.
    Amft, Oliver
    University of Passau.
    Textile Building Blocks:Toward Simple, Modularized, and Standardized Smart Textile2017Ingår i: Smart Textiles: Fundamentals, Design, and Interaction, Springer, Cham , 2017, s. 303-331Kapitel i bok, del av antologi (Refereegranskat)
    Abstract [en]

    Textiles are pervasive in our life, covering human body and objects, as well as serving in industrial applications. In its everyday use of individuals, smart textile becomes a promising medium for monitoring, information retrieval, and interaction. While there are many applications in sport, health care, and industry, the state-of-the-art smart textile is still found only in niche markets. To gain mass-market capabilities, we see the necessity of generalizing and modularizing smart textile production and application development, which on the one end lowers the production cost and on the other end enables easy deployment. In this chapter, we demonstrate our initial effort in modularization. By devising types of universal sensing fabrics for conductive and non-conductive patches, smart textile construction from basic, reusable components can be made. Using the fabric blocks, we present four types of sensing modalities, including resistive pressure, capacitive, bioimpedance, and biopotential. In addition, we present a multi-channel textile–electronics interface and various applications built on the top of the basic building blocks by ‘cut and sew’ principle.

  • 19.
    Christoffersson, Astrid
    et al.
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Hammarlund, Emma
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    PIEZOELEKTRISK TRYCKSENSOR: En undersökning om textil struktur och piezoelektricitet2015Självständigt arbete på grundnivå (kandidatexamen), 10 poäng / 15 hpStudentuppsats (Examensarbete)
    Abstract [sv]

    Arbetet syftar till att skapa en prototyp av en textil trycksensor som kan känna av och skilja på olika typer av belastning. En lämplig metod för att på ett vetenskapligt sätt testa sagda prototyp har också utvecklats. Prototypen har tillverkats för hand på en datoriserad vävstol och de ingående materialen är piezoelektrisk poly(vinyldifluorid), PVDF, tvinnad tillsammans med ett konduktivt garn, Shieldex®, samt polyester. När PVDF-fiber utsätts för töjning genererar de en spänning, vars storlek står i relation till töjningen. Den vävda konstruktion som valdes till prototypen är en distansvara där väftinläggen lagts in i 7 olika lager för att skapa volym. Därmed möjliggörs en töjning av PVDF-fibern som relaterar till trycket strukturen utsätts för.

    För att utvärdera strukturen skapades tre likadana trycksensorer innehållandes fyra PVDF-fiber som lagts in med ett mellanrum på ca 1,5 cm. Dessa prototyper har sedan fästs på en egentillverkad ramp och PVDF- samt Shieldex®-garnet har kopplats in till ett oscilloskop. Därefter har vikter rullats över prototypen för att generera spänning, vilken har kunnat uppmätas med oscilloskopet. De uppmätta resultaten har analyserats och utvärderats med hjälp av Excel.

    Testerna visade tydligt att spänningen som uppmättes stod i relation till vikternas storlek; högre vikter gav en mätbart större spänning. Det finns dock stor varians bland resultaten och utvärdering av samtliga prover visar på stora standardavvikelser hos samtliga fiber. Detta innebär att även om det är tydligt att ökad vikt medför ökad signal så kan det finnas svårigheter i att avgöra storleken på vikten utifrån den uppmätta spänningen.

  • 20. Ciera, L.
    et al.
    Beladjal, L.
    Almeras, X.
    Gheysens, T.
    Mertens, J.
    Nierstrasz, V.
    Högskolan i Borås, Institutionen Textilhögskolan.
    Van Langenhove, L.
    A model system to study resistance of biological compounds to melt extrusion process parameters.2013Ingår i: Proceedings of the 13th AUTEX World Textile  Conference, Dresden, Germany May 22-24  2013., 2013Konferensbidrag (Övrigt vetenskapligt)
  • 21.
    Dixdotter, Maja
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    vemod(en): -A tribute to the perfect error.2015Självständigt arbete på grundnivå (kandidatexamen), 10 poäng / 15 hpStudentuppsats (Examensarbete)
    Abstract [en]

    In this collection I have explored the paradox of perfection. The collection is an epic tribute to my prior self and discovers how the unperfect can be transformed to something, perceived, perfect. I flirt with my past obsessions in finding mathematically measured legs, exact tailored arms and perfectly fitted stockings. In a fun, poetic and melancholy way I invite the viewer on a highly visual voyage to my childhood where the obsession of finding costume perfection "Vemoden" the act of control becomes visual through statuesque frozen looks, where the previous unperfect becomes perfection.

  • 22.
    Dumitrescu, Delia
    Högskolan i Borås, Institutionen Textilhögskolan.
    Relational Textiles2013Konferensbidrag (Övrigt vetenskapligt)
    Abstract [en]

    The relationship between technology and the expression of form have always been interconnected in the architectural design process; associating the art of envisioning spaces with the craft of materializing them. Recently in terms of surface fabrication, computational tools of representation and material fabrication opened for architectural design new possibilities to explore novel spatial expressions. Surface design processes in architecture start to borrow from the logic of representation of different non-hierarchical structures, e.g., biological systems or textile construction techniques. Relating to that, the present fascination of textiles in architectural design relies on this specific way of building surface design as non-hierarchical form, and by that, allowing the designer to play with the depth of the surface design at micro and macro levels. Exploring different relations between digital and physical through textiles expressions, this research reassess static principles of form–marking the turn from static to relational principles. Thus, the intention is to describe how the character of the textiles and computation as design material redefines the notion of space trough surface aesthetics merging the digital to the physical, and how spatiality can be questioned through textile and interaction aesthetics. Using practice-based research methodology, this research opens and explores this design space by relating theory and practice; it questions and reframes fundamental concepts of expression and scale in architecture by proposing methods for surface design, and a specific language to describe textile architectural aesthetics.

  • 23.
    Dumitrescu, Delia
    et al.
    Högskolan i Borås, Institutionen Textilhögskolan.
    Lundstedt, Lotta
    Högskolan i Borås, Institutionen Textilhögskolan.
    Persson, Anna
    Högskolan i Borås, Institutionen Textilhögskolan.
    Satomi, Mika
    Högskolan i Borås, Institutionen Textilhögskolan.
    Repetition: interactive expressions of pattern translation2012Ingår i: Proceedings The Art of Research 2012, The art of research 2012 Making, Reflecting and understading, 28-29 November 2012 at Aalto University School of Arts, Design and Architecture Helsinki, Finland, 2012Konferensbidrag (Refereegranskat)
    Abstract [en]

    As a way of opening a space where methods from the fields of fashion design, textile design and interaction design overlap, the project Repetition intersects different methodologies through practice-based research in design. Experiments were conducted to explore ways of creating relationships between body and space by means of translating information as pattern design between garments and interactive knitted walls. By arranging a startup performance, we reflected on the expressional variables that influence the expression of the pattern translations; variables concerning the garments, the walls, the print and the movements were illustrated by the expressions found. The result formulates specific descriptions regarding accuracy and distribution of pattern translation, illustrating basic concepts of pattern formations identified in visual changes appearing in the garment. By communicating our understanding of basic expressions, Repetition aims to formulate a new framework for collaborative work as a method for further design.

  • 24.
    Dural-Erem, Aysin
    et al.
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Wessman, Per
    RISE Research Institutes of Sweden, Surface, Process and Formulation.
    Husmark, Ulrika
    SCA Hygiene Products AB.
    Nierstrasz, Vincent
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Biocontrol of solid surfaces in hospitals using microbial-based wipes2019Ingår i: Textile research journal, ISSN 0040-5175, E-ISSN 1746-7748, Vol. 89, nr 2, s. 216-222Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Hospital-acquired infections have become a major challenge which threaten the hospitalized patients’ safety. The presence of nosocomial pathogens is generally reported in connection with solid surfaces near patient environments. These surfaces become significant sources of transmission and lead most often to the contamination and cross-contamination of nosocomial pathogens to the patients and staff. This paper investigates strategies to apply beneficial bacteria on viscose-based nonwoven wipes and the viability of these beneficial bacteria on the wipes along with characterization of the physical properties of the wipes. Major findings include that it is possible to produce dry wipes which contain an adequate number of beneficial bacteria or spores. After these wipes are wetted, they can release a certain number of bacteria from the wetted wipes. These released beneficial bacteria can inhibit pathogens by growing and colonizing on the wiped surfaces.

  • 25.
    Eneh, Sandra
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Showroom the Future of Online Fashion Retailing 2.0: Enhancing the online shopping experience2015Självständigt arbete på avancerad nivå (masterexamen), 20 poäng / 30 hpStudentuppsats (Examensarbete)
    Abstract [en]

    The following have been rectified in response to previous evaluation by examiner Olof Bruninge. -We have solely chosen qualitative methods in data collection and analysis by making use of data gathered from focus group workshop. The findings have been coded and analysed descriptively. -We have reformulated research questions and replaced the hypothesis with open questions. Allowing us to explore the participants’ behaviour rather than testing hypothesis. -All quantitative measures have been replaced with qualitative analysis and descriptions. -We have provided tables with results from focus group findings to increase transparency in our data

  • 26.
    Eriksson, Siw
    et al.
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Sandsjö, Leif
    Högskolan i Borås, Akademin för vård, arbetsliv och välfärd. MedTech West.
    Three-dimensional Fabrics as Medical Textiles2015Ingår i: Advances in 3D Textiles: A volume in Woodhead Publishing Series in Textiles / [ed] X. Chen, Woodhead Publishing Limited, 2015, s. 305-340Kapitel i bok, del av antologi (Övrigt vetenskapligt)
    Abstract [en]

    The number of 3D textile applications in medicine is rapidly increasing as new technology and procedures are introduced in health care.  A first estimate of current medical applications of both general and 3D textiles is presented based on the medical devices classification system established by the US Food and Drug Administration. The textile specifics for these applications are covered from a textile technique perspective where the different 3D weaving as well as knitting, braiding and non-woven techniques are described and how their properties they can contribute in medical applications. In addition, emerging opportunities based on smart textiles as part of textile systems are described on a general level. The strong application areas of 3D medical textiles, i.e. wound management, vascular grafting and scaffolding for tissue engineering are covered in detail both from the medical and textiles perspective. Finally, some future lines of development are suggested and a short discussion on how new 3D textiles applications can be developed in close cooperation between the textile industry and the health care sector is presented.

  • 27.
    Eutionnat-Diffo, Prisca
    et al.
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Cayla, Aurelie
    ENSAIT/GEMTEX.
    Campagne, Christine
    ENSAIT/GEMTEX.
    Zeng, Xianyi
    ENSAIT/GEMTEX.
    Chen, Yan
    University of Soochow.
    Guan, Jinping
    University of Soochow.
    Nierstrasz, Vincent
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Stress, strain and deformation of poly-lactic acid filament deposited onto polyethylene terephthalate woven fabric through 3D printing process2019Ingår i: Scientific Reports, ISSN 2045-2322, E-ISSN 2045-2322, Vol. 9, artikel-id 14333Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Although direct deposition of polymeric materials onto textiles through 3D printing is a great techniqueused more and more to develop smart textiles, one of the main challenges is to demonstrate equalor better mechanical resistance, durability and comfort than those of the textile substrates beforedeposition process. This article focuses on studying the impact of the textile properties and printingplatform temperature on the tensile and deformations of non-conductive and conductive poly lacticacid (PLA) filaments deposited onto polyethylene terephthalate (PET) textiles through 3D printingprocess and optimizing them using theoretical and statistical models. The results demonstrate thatthe deposition process affects the tensile properties of the printed textile in comparison with the onesof the textiles. The stress and strain at rupture of the first 3D printed PLA layer deposited onto PETtextile material reveal to be a combination of those of the printed layer and the PET fabric due to thelower flexibility and diffusion of the polymeric printed track through the textile fabric leading to a weakadhesion at the polymer/textile interface. Besides, printing platform temperature and textile propertiesinfluence the tensile and deformation properties of the 3D printed PLA on PET textile significantly.Both, the washing process and the incorporation of conductive fillers into the PLA do not affect thetensile properties of the extruded polymeric materials. The elastic, total and permanent deformations ofthe 3D-printed PLA on PET fabrics are lower than the ones of the fabric before polymer deposition whichdemonstrates a better dimensional stability, higher stiffness and lower flexibility of these materials.

  • 28.
    Eutionnat-Diffo, Prisca
    et al.
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Chen, Yan
    University of Soochow.
    Guan, Jinping
    University of Soochow.
    Cayla, Aurelie
    ENSAIT/GEMTEX.
    Campagne, Christine
    ENSAIT/GEMTEX.
    Zeng, Xianyi
    ENSAIT/GEMTEX.
    Nierstrasz, Vincent
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Optimization of adhesion of poly lactic acid 3D printed onto polyethylene terephthalate wovenfabrics through modelling using textile properties2019Ingår i: Rapid prototyping journal, ISSN 1355-2546, E-ISSN 1758-7670Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Purpose

    This paper aims to evaluate and simulate the impact of the build platform temperature of the three-dimensional (3D) printer, the structure and heat transfer of textiles on the adhesion and durability after washing properties of 3D printed polymer onto textile materials using thin layers of conductive and non-conductive extruded poly lactic acid monofilaments (PLA) deposited on polyethylene terephthalate (PET) woven fabrics through fused deposition modeling (FDM) process.

    Design/methodology/approach

    Prior to FDM process, thermal conductivity, surface roughness and mean pore size of PET woven fabrics were assessed using the “hot disk,” the profilometer and the capillary flow porometry methods, respectively. After the FDM process, the adhesion and durability after the washing process properties of the materials were determined and optimized based on reliable statistical models connecting those properties to the textile substrate properties such as surface roughness, mean pore size and thermal conductivity.

    Findings

    The main findings point out that higher roughness coefficient and mean pore size and lower thermal conductivity of polyester woven textile materials improve the adhesion properties and the build platform presents a quadratic effect. Additionally, the adhesion strength decreases by half after the washing process and rougher and more porous textile structures demonstrate better durability. These results are explained by the surface topography of textile materials that define the anchorage areas between the printed layer and the textiles.

    Originality/value

    This study is for great importance in the development of smart textiles using FDM process as it presents unique and reliable models used to optimize adhesion resistance of 3D printed PLA primary layer onto PET textiles.

  • 29.
    Eutionnat-Diffo, Prisca
    et al.
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Nierstrasz, Vincent
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Campagne, Christine
    Zeng, Xianyi
    Cayla, Aurelie
    Guan, Jinping
    Chen, Yan
    Correlation between heat transfer of polyester textiles and its adhesion with 3D-printed extruded thermoplastic filaments2018Ingår i: 18th AUTEX World Textile Conference, June 20-22, 2018, Istanbul, Turkey / [ed] IOP publishers, 2018, s. 118-121, artikel-id 3132Konferensbidrag (Refereegranskat)
    Abstract [en]

    FDM technology used for printing functionalized layers on textiles brought new challenges such as the understanding and the improvement of the adhesion performance of the thermoplastic filaments on synthetic textile materials. In addition to the impact of printing parameters, the correlation between the heat transfer and structure of the textile material and the adhesion performance after varying printer platform temperature was an important parameter considered in this paper. A factorial design, using material density, direction, and structure and platform temperature as factors, was followed. 3D-printed materials made of PLA filaments deposited on polyester woven and knit materials were manufactured on a dual-head printer and their adhesion was measured according to DIN EN ISO 13937-2 and ISO 11339 and the heat transfer of the fabrics according to ASTM D4966-98, ISO 6330 and ISO 22007-2. The findings showed that the heat transfer and structure of textile materials affect the adhesion properties of the 3D-printed material.

  • 30.
    Eutionnat-Diffo, Prisca
    et al.
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Yan, Guan
    University of Soochow.
    Guan, Jinping
    University of Soochow.
    Nierstrasz, Vincent
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Zeng, Xianyi
    ENSAIT/GEMTEX.
    Cayla, Aurelie
    ENSAIT/GEMTEX.
    Campagne, Christine
    ENSAIT/GEMTEX.
    Adhesion improvement of conductive poly-lactic acid filament 3D printed onto polyethylene terephthalate fabric through chemical bonding2019Ingår i: Adhesion improvement of conductive poly-lactic acid filament 3D printed onto polyethylene terephthalate fabric through chemical bonding, 2019Konferensbidrag (Refereegranskat)
    Abstract [en]

    Adhesion of conductive poly-lactic acid filament (PLA) 3D printed onto polyethylene terephthalate (PET) fabrics is a one of the fundamental properties to guarantee their use in smart textiles field. The conductive PLA layer is made of carbon black (CB) incorporated into PLA polymer prior to extrusion process. It is commonly known that due to the low surface tensions of polymeric materials, 3D printed conductive PLA onto PET textiles possess poor adhesion. Therefore, an improvement of this property, even already approached by some researchers (1–6), is still highly required. In this research work, a pre and post-treatments were applied to significantly improve the adhesion strength at the interface polymeric layer/textile compared to former techniques used in other researches such as plasma treatment; coating of glue stick, washing and ironing processes. The pre-treatment consists in grafting acetic acid by UV curing onto both PET fabric and PLA filament through digital printing and deep coating respectively and then applying a solution pressure sensitive adhesive (PSA) on the fabric via digital printing. After 3D printing process on textiles, heat and pressure were applied on the materials using a heat press to chemically bond the PLA layer to the PET fabric. The findings are very promising as they demonstrate the possibility of significantly improving the adhesion of thermoplastic polymer 3D printed on textiles for smart textiles applications. Compared to other alternative solutions, these findings can potentially be implemented, in the future, by using 3D printing technology for pre-treatment and printing processes followed by thermo-compression technique for complete chemical bonding.

  • 31.
    Guo, Li
    et al.
    Högskolan i Borås, Akademin för textil, teknik och ekonomi. Smart textiles .
    Eriksson, Siw
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Sandsjö, Leif
    Högskolan i Borås, Akademin för vård, arbetsliv och välfärd.
    3D Composite Textile Characteristics Relevant in Pressure Ulcer Management2015Konferensbidrag (Refereegranskat)
    Abstract [en]

    INTRODUCTION

    Effective ulcer management requires the wound to be in a moist but still breathable environment, to facilitate healing, absorb exudates and prevent maceration. One of the applicable methods to achieve this is the use of composite dressings. Most composite dressings are made of three layers to provide absorption and a bacterial barrier in a non- or semi-adherent cover. Various common textile materials such as cotton, polyester, polypropylene and cellulose can be used as different layers in those wound dressings. In addition to these established dressings, electrical stimulation therapy may be used in treating ulcers. It has been reported that electrical stimulation can reduce the area and depth of the wound in a shortened time compared to conventional treatment. In summary, encouraging wound healing results have been obtained both from using composite wound dressing and from applying of electrical stimulation. The aim of this study is to present a conceptual design based on a woven 3D structure that combines the composite wound dressing properties with electrical stimulation for pressure ulcers healing/management.

    METHOD

    In the suggested structure, different layers in X, Y and Z led were designed with different materials for different purposes.  The top layer consisting of a low-density web to provide a non-adherent layer combined with two textile electrodes made of conductive threads, the middle layer contributes pressure release and absorption of exudates, and the bottom layer next to the wound for moisture keeping while still allowing adequate ventilation.

    Two key properties were addressed in the study: pressure release and the possibility to provide electrical stimulation of the wound. Simulation with COMSOL Multiphysics was used to study pressure distribution according to Hertz contact theory. The surface resistance of the electrodes were also studied using in-house designed four-point measurement probes.

    RESULTS

    The simulation results show the composite structure to exhibit good pressure release properties. Surface resistance testing proved that the textile electrodes have resistance in the magnitude of 102 indicating that textile electrodes can be used for electrical stimulation in ulcers healing.

    The first results from this study demonstrate the feasibility to design a textile system combining established composite dressings solutions with means for electrical stimulation based on 3D weaving technique to be applied in pressure ulcer healing. 

  • 32.
    Hashemi Sanatgar, Razieh
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    FDM 3D printing of conductive polymer nanocomposites: A novel process for functional and smart textiles2019Doktorsavhandling, monografi (Övrigt vetenskapligt)
    Abstract [sv]

    Syftet med denna studie är att kunna dra nytta av funktionaliteten hos fused deposition modeling (FDM) 3D-skrivna konduktiva polymera nanokompositer (CPC) för utveckling av funktionella och smarta textilier. 3D-skrivare har stor potential, som process, att kunna skapa en ny klass av multifunktionella nanokompositer. Därför behövs utveckling och karakterisering av funktionella polymerer och nanokompositer som går att använda med en 3D-skrivare för att kunna använda 3D-skrivare som en ny process för applicering av funktionella material på textil. Den här metoden introducerar textila funktionaliseringsprocesser som är mer flexibla, resurseffektiva och kostnadseffektiva jämfört med konventionella tryckmetoder som schablontryck och inkjet. Målet är att utveckla en integrerad eller skräddarsydd produktionsprocess för smarta och funktionella textilier som undviker onödig användning av vatten, energi och kemikalier samt som minimerar avfall, för förbättrat ekologiskt fotavtryck och produktivitet. 

    Den här uppsatsen bidrar med skapande och karakterisering av CPC-filament som går att 3D-skriva, applicering av polymerer och nanokompositer på textil och undersökning av de 3D-skrivna CPC-lagrens prestation vad gäller funktionalitet. Först skapades CPC-filament som var avsedda för 3D-skrivare genom att flerväggiga kolnanorör (MWNT) och high structured carbon black (Ketjenblack)(KB) inkorporerades i en biobaserad polymer, polymjölksyra (PLA), genom en smältblandningsprocess. De morfologiska, elektriska, termiska och mekaniska egenskaperna hos filamenten och de 3D-skrivna CPC-lagren undersöktes. Därefter analyserades de 3D-skrivna CPC-lagrens prestanda under applicerade spänning- respektive kompressionskrafter. För att utvärdera de utskrivna lagrens effektivitet som tryck-/kraftsensor undersöktes resistansförändringen mot applicerad belastning. Slutligen användes 3D-skrivare för att applicera polymererna och nanokompositerna på textil och lagrens vidhäftningsförmåga på textilen undersöktes. 

    Resultaten visade att de PLA-baserade nanokompositerna med MWNT och KB går att använda för 3D-skrivare. Förändringarna i de morfologiska, elektriska, termiska och mekaniska egenskaperna hos nanokompositerna till följd av 3D-skrivningen ger oss stor förståelse kring processoptimering. Dessutom visar resultaten att PLA/MWNT- och PLA/KB- kompositer är bra piezoresistiva råmaterial för 3D-skrivare med potentiella tillämpningar inom bärbar elektronik, mjuk robotik och proteser, där det krävs komplex design, anpassningsbarhet och möjlighet till skräddarsydda lösningar. Till sist visades att olika variabler i 3D-skrivarprocessen har signifikant påverkan på polymerernas och nanokompositernas vidhäfningsförmåga på textil, vilket presenteras med den bäst anpassade modellen för den specifika polymeren och textilen. 

  • 33.
    Hatamvand, Mohammad
    et al.
    Yazd University.
    Abbas Mirjalili, Seyed
    Yazd University.
    Fattahi, Saeid
    Yazd University.
    Bashir, Tariq
    Yazd University.
    Skrifvars, Mikael
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Optimum Drafting Conditions of Polyester and Viscose Blend Yarns2017Ingår i: AUTEX Research Journal, ISSN 1470-9589, E-ISSN 2300-0929Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    In this study, we used an experimental design to investigate the  influence of the total draft, break draft, distance between the aprons (Clips) and production roller pressure on yarn quality in order to obtain optimum drafting conditions for polyester and viscose (PES/CV) blend yarns in ring spinning frame. We used PES fibers (1.4 dtex × 38 mm long) and CV fibers (1.6 dtex × 38 mm long) to spin a 20 Tex blend yarn of PES (70%)/CV (30%) blend ratio. When the break draft, adjustment of distance between of aprons and roller pressure is not reasonable, controlling and leading of the fibers is not sufficient for proper orientation of the fibers in the yarn structure to produce a high quality yarn. Experimental results and statistical analysis show that the best yarn quality will be obtained under drafting conditions total draft of 38, 1.2 break draft, 2.8 mm distance between of aprons and maximum pressure of the production top roller (18daN).

  • 34.
    Huang, Meiyuan
    et al.
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Guu, Annie
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    A study of consumer perception of a Chinese luxury fashion apparel brand in Sweden2015Självständigt arbete på avancerad nivå (masterexamen), 20 poäng / 30 hpStudentuppsats (Examensarbete)
    Abstract [en]

    This thesis investigates consumer perceptions of a Chinese luxury fashion brand in Sweden. The impact of nation brand image in terms of consumer buying behaviour and perception is examined by performing a case study of Shanghai Tang, comparing it to the American luxury fashion brand Ralph Lauren through the brands’ country of origin and brand history. Then a questionnaire is developed to analyse the luxury consumers’ perception of the Chinese brand Shanghai Tang and calculate the probability of customers purchasing luxury goods by Shanghai Tang. Finally, the future of Chinese luxury in Sweden will be discussed through an in-depth interview.

  • 35.
    Huniade, Claude
    et al.
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Mulder, Roos
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Milad, Asadi Miankafshe
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Bashir, Tariq
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Persson, Nils-Krister
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Disposable, green smart textiles based on conductive graphite fibres2019Konferensbidrag (Övrigt vetenskapligt)
    Abstract [en]

    Smart textiles, a part of the present boom of wearables, is at the risk of being a newenvironmental problem as many axioms of sustainability are violated here, that of driving(mass) consumption, mixing of components of different material origin and no obvious wastehandling system when used and worn out. Smartness has been synonymous with integration ofelectronic conductivity functionality, typically realised by metal wires. Carbon allomorphsshowing low electrical resistivity might be an environmental friendly alternative.

    Here we report on attempts with simple conductive graphite systems from which we makeconductive textile fibres, the production of which could be up-scaled to industrial volumes.Coating textile bulk fibers as polyester, polyamide, wool and cellulose based regenerate onesrather than (melt/wet) spinning new fibers, the mechanical properties are sustained makingthem processable within existing textile processes infrastructure.

    Several different graphite compositions and different yarn topologies are compared. Twisting isshown to greatly increase the overall yarn conductance. Fabrics are manufactured with thegraphite yarns in the double role of being structural as well as functional. Furthermore, analphabet of fundamental electrical circuitry elements are demonstrated; conductor, capacitor,inductor. The devices are consisting of non-toxic components that are disposable andcompostable; showing the benefits of carbon based soft electronics.

  • 36.
    Imtiaz, Asaad
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Business Expansion of Apparel Brands: Accessing opportunities in Apparel/Retail sector in Pakistan2015Självständigt arbete på avancerad nivå (masterexamen), 20 poäng / 30 hpStudentuppsats (Examensarbete)
    Abstract [en]

    The current study aims to investigate the feasibility of international apparel and footwear retailers to expand their business in Pakistan and compete with other brands. It also highlights the business opportunities in Pakistan apparel retail sector and the motivations of international brands behind expansions. This study was conducted with the help of interviews based on diamond model of Porter, and Hofsetede cultural dimensions. The open ended questions were delivered to the professionals electronically while interviews were conducted by telephone. Seven companies from Pakistan were selected for study purpose. Data was analyzed and assessed manually. The study revealed that there is a significant opportunity for international apparel retailers to launch their retail outlets in Pakistan along with some risks. International brands which are financially strong can tackle these risks. However it was concluded that the companies with less financial strength may find it difficult to go in a new market within 5 years. UK brands are already there and brands from other countries are also opening. Overall Pakistan retail sector is growing and people are becoming fashion conscious. This study provides information to International apparel brands which they can take into consideration while entering Pakistan's apparel retail market. It also gives an opportunity for assessment of market in the light of theoretical modules and shows a direction of getting better market share by launching.

  • 37.
    Iyer, Sweta
    et al.
    Högskolan i Borås, Akademin för textil, teknik och ekonomi. ENSAIT.
    Behary, Nemeshwaree
    ENSAIT, GEMTEX.
    Nierstrasz, Vincent
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Bio-inspired approaches to design bio-luminescent textiles2017Konferensbidrag (Refereegranskat)
    Abstract [en]

    Luminescent textiles are being increasingly used in apparel and sportswear aswell as in buildings, agriculture and automotives, for safety alert or forillumination or as a design feature[1]. Till now these luminescent textiles havebeen based on technologies such as LED, luminescent particles (rare earthmetals and metal oxides), which are not so eco‐friendly[2].Bio‐inspired strategies can provide efficient methods to achieve eco friendlybioluminescent textiles. Research projects have explored ways which aremainly based on culture of bioluminescent algae[3] or bacteria on textiles.Here we present another approach to achieve bioluminesence using biobasedproducts from various living organisms such as fireflies, fungi, earthwormsthat are found in land and in jelly fishes, shrimps, dinoflagellates, corals inmarine environment [4]. In order to mimic the luminescence effect seen innature, reaction mechanisms in various bioluminescent living organisms arestudied and the components or molecules responsible for luminescence areidentified [5‐10]. Most of the time, these involve enzymatic reactions.However the main challenge is to reproduce the bioluminescent mechanismand to adapt it to new materials which can yield some eco efficient bioinspired luminescent textiles.

  • 38.
    Iyer, Sweta
    et al.
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Nemeshwaree, Behary
    ENSAIT-GEMTEX.
    Nierstrasz, Vincent
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Measurement of luminescence intensity on textiles using Luminous bacterial biocatalytic system2019Konferensbidrag (Refereegranskat)
    Abstract [en]

    Nature is the most exquisite thing around us with the existence of living organisms exhibiting different phenomena such as water repel/ency, touch sensitive plant and chameleon skin. Some of these phenomena inspired scientists to explore and design smart fabrics biomimicking the behaviour or pattern in living organisms. Bioluminescence is one such phenomenon where-in different living organisms such as firefly, jelly fish and crustaceans have the ability to impart visible light of specific wavelength, by enzyme catalysed reactions. Existence and study of such light emitting living organisms have been carried out, and harnessing these reactions has already transformed significant areas of medical field and clinical diagnosis, but research work on transforming this into living light is limited. In the present study, luminous bacterial system was investigated to assess and detect the bioluminescence behaviour onto the textile material. In the Luminous bacterial system, in vivo biochemical mecha­nism involves two different enzymes as well as different substrate components. Emission of light due to in vivo luminous bacterial reaction mechanism is seen in visible region. For in vitro reaction mechanism study, physical adsorption technique was used to graft both enzymes on plasma activated PET nonwoven textile and when substrates were introduced manually during the analysis, the biochemical reaction leading to light production occured. A Luminometer equipment was used to determine the light intensity in terms of Relative light units (RLU). The measurement results were obtained for nonwoven plasma treated PET with enzyme and substrate addition at different concentration and RLU value was obtained. The analysis data revealed that light intensity in RLU could be recorded by introducing both the enzymes and substrates on textile material, however intensive research is required in order to observe emitted light through the naked eye. The research study will help to attain

  • 39.
    IYER, SWETA
    et al.
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Nierstrasz, Vincent
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Photoluminescent textile using biobased riboflavin derivative (FMN)2018Ingår i: 18th AUTEX World Textile Conference, Istanbul, Turkey, Institute of Physics (IOP), 2018, s. 1-4, artikel-id 3471Konferensbidrag (Övrigt vetenskapligt)
    Abstract [en]

    Riboflavin derivative such as Flavin mononucleotide possesses distinctive biological and physicochemical properties such as photosensitivity, redox activity and fluorescence. Flavin mononucleotide widely known as FMN is a biomolecule having molecular formula as C17H20N4NaO9P and is produced from biobased riboflavin by enzymatic reaction in living organisms. In contrast to riboflavin which is sparingly soluble in water, FMN is highly water soluble due to the presence of an ionic phosphate group. The presence of isoalloxazine ring in FMN is responsible for its properties such as UV absorption and fluorescence. This study evaluates the potential use of Flavin mononucleotide (FMN) for production of photoluminescent textile.

  • 40.
    Jiong, Sun
    et al.
    Högskolan i Skövde.
    Billing, Erik
    Högskolan i Skövde.
    Seoane, Fernando
    Högskolan i Borås, Akademin för textil, teknik och ekonomi. Högskolan i Borås, Akademin för vård, arbetsliv och välfärd. Karolinska Institutet.
    Zhou, Bo
    DFKI.
    Högberg, Dan
    Högskolan i Skövde.
    Hemeren, Paul
    Högskolan i Skövde.
    Categories of touch: Classifying human touch using a soft tactile sensor2017Ingår i: The robotic sense of touch: From sensing to understanding, workshop at the IEEE International Conference on Robotics and Automation (ICRA), 29 May, Singapore., 2017Konferensbidrag (Refereegranskat)
  • 41.
    Johansson, Evelina
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Kommunikation genom plaggskisser: En studie kring skisskommunikation mellan beställare och leverantör2018Självständigt arbete på grundnivå (kandidatexamen), 10 poäng / 15 hpStudentuppsats (Examensarbete)
    Abstract [en]

    This thesis is a study that investigates how the communication in the developing process of a garment can be developed between a distributor and a supplier. The purpose is to investigate how large part of the quality assured and processed sketches can help improve the communicational issues and minimize the number of samples that are being transported between the buyer and the factory causing delays due to large distances. The study has been carried out in collaboration with a company that has been job initiator for the subject of the thesis. The main area in the method are based on a quality improving process to discover what a supplier as well as a distributor consider to be a distinct sketch. By using a survey as a data collection method, an evaluation of the fashion company`s sketches have been exercised. To reassure the quality of the sketches within the company and to investigate whether this can cause minor misunderstandings within the production department. In this study outlines of the inside of a blazer have been the focus as the company recently has experienced issues with these parts in the production of prototypes. The result is based on a comparison between two blazer prototypes that the factory has sent to the company as a first suggestion to manufacture the blazer. The conclusion highlights and evaluates the level of importance of the quality assured sketches versus the non-assured ones, and whether these are essential for the company`s desired quality and standard of the item or not. Thus, the conclusion also covers a discussion around how to fulfill the desired quality and standards of a blazer for the fashion company in question.

  • 42.
    Johansson, Matilda
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Repeated Stories: exploring storytelling for children in surface pattern design2015Självständigt arbete på grundnivå (kandidatexamen), 12 poäng / 18 hpStudentuppsats (Examensarbete)
    Abstract [en]

    Repeated Stories is an exploratory project in textile design where the aim is to explore the design of storytelling patterns addressed to children. More precisely, the work examines how patterns can be designed as a tool to encourage curiosity and creativity among children. The work is practice-based, building on concrete experiments with a workshop character, where combinations of textile material, colour, printing techniques and scale are explored. The primary motive for this work is to take advantage of textile design expertise in a social context, to find new areas for competence in making repeats and patterns, and how a social value can be added to patterns. The result is an installation of three hanging textiles, meant for a public space, such as waiting room in a hospital. The work proposes an alternative approach to surface patterns by adding storytelling and give the patterns both a communicative and decorative function.

  • 43.
    Kadi, Nawar
    et al.
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Skrifvars, Mikael
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Peterson, Joel
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Holmudd, Olle
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Karnoub, Amer
    University of Aleppo.
    The Effect of Warp Tension on the Colour of Jacquard Fabric2017Ingår i: IOP Conference Series: Materials Science and Engineering, 2017, Vol. 254, artikel-id 082014Konferensbidrag (Övrig (populärvetenskap, debatt, mm))
    Abstract [en]

    The aims of this paper is to demonstrate the effect of warp tension on fabric colour for several types of weaves structures, and found a relationship between them. The image analyse technique used to determine the proportion of yarns colour appearance, the advantage of this techniques is the rapidity and reliability. The woven fabric samples are consisting of a polyester warp yarn with continuous filaments and density of 33 end/cm, a polypropylene weft yarn with a density of 24 pick/cm, and the warp tension ranged between 12-22 cN/tex. The experimental results demonstrated the effect of the warp tension on the colour of fabric, and this effect is related to several factors, where the large proportion of warp appearance leads to larger effect on fabric colour. The difference in the value of colour differences ΔEcmc is larger is in the range 16 to 20 cN/tex of warp tension. Using statistical methods, a mathematical model to calculate the amount of the colour difference ΔEcmc caused by the change in warp tension had been proposed.

  • 44.
    Kahoush, May
    Högskolan i Borås, Akademin för textil, teknik och ekonomi. ENSAIT.
    Bio-functionalization of conductive textile materials with redox enzymes2017Ingår i: IOP Conference Series: Materials Science and Engineering, 2017, Vol. 254, artikel-id 112002Konferensbidrag (Refereegranskat)
    Abstract [en]

    In recent years, immobilization of oxidoreductase enzymes on electrically conductive materials has played an important role in the development of sustainable bio-technologies. Immobilization process allows the re-use of these bio-catalysts in their final applications.

    In this study, different methods of immobilizing redox enzymes on conductive textile materials were used to produce bio-functionalized electrodes. These electrodes can be used for bio-processes and bio-sensing in eco-designed applications in domains such as medicine and pollution control.

    However, the main challenge facing the stability and durability of these electrodes is the maintenance of the enzymatic activity after the immobilization. Hence, preventing the enzyme’s denaturation and leaching is a critical factor for the success of the immobilization processes. 

  • 45.
    Kapur, Jyoti
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Smells: olfactive dimension in designing textile architecture2017Licentiatavhandling, monografi (Övrigt vetenskapligt)
    Abstract [en]

    Designing with non-visual attributes challenges ways of representation. This research explores methods for designing with invisible materiality within the research practice, as well as ways of representation through textiles when designing spaces. Exploring textiles and smells within a space, the research program investigates spatial interactions.

    This research focuses on designing embodied experiences using tangible materials as expressions of smells. Through the spatial installations and performances Sight of smell, Touch of smell, and Smell, space, and body movement, haptics were explored as one of the methods of interaction with smells through textiles.

    Through the sense of touch, this research also investigates ways of revealing, activating, and disseminating smells within a space. Smells were purposely added through the methods of dyeing, coating, and printing to the textile materials that did not inherently embody any smells, As a result, tactile surfaces create non-visual expressions of smell. Further ideas of research in this area would explore another perspective of designing with smells in spaces. As an example, by designing textiles being smell absorbers, dividers, and re ectors, could compliment the spatial concepts and deals with the already existing smells in a living environment.

    In this licentiate thesis thinking through the olfactive dimension to design textiles is not only novel for the textile design eld; but also, its proposal for application in the spatial design is quite unique, and o ers a new dimension for spatial design. 

  • 46.
    Karnoub, Amer
    et al.
    Aleppo University, Syria.
    Kadi, Nawar
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Azari, Zitouni
    ENIM, France.
    Using the expert system to analyze loom performance2017Ingår i: Journal of the Textile Institute, ISSN 0040-5000, E-ISSN 1754-2340, Vol. 108Artikel i tidskrift (Refereegranskat)
  • 47.
    Kristoffersen, Beatrice
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Woven neck labels made from Tencel2019Självständigt arbete på grundnivå (kandidatexamen), 10 poäng / 15 hpStudentuppsats (Examensarbete)
    Abstract [sv]

    Idag produceras majoriteten av textila etiketter av 100% polyester. Nilörn som är ett globalt etikettbolag har redan introducerat mer hållbara material till sitt utbud i form utav bluesign® certifierad- och återvunnen polyester. 2018 tog företaget fram en etikett från Tencel väft och polyestervarp. Tencel är en fiber framtaget från cellulosans trämassa och har många liknande egenskaper till både naturliga och syntetiska fibrer. Målet med detta arbete var att utveckla denna produkt vidare och få den ännu mer hållbar. Arbetet undersöker möjligheterna att utveckla och producera en vävd nacketikett med Tencelväft och varp i naturfibrer. Den nya etiketten skulle komma att bli jämförd med andra etiketter som företaget producerar för att se hur dess egenskaper skiljer sig från varandra. Utvecklingsfasen började genom att lokalisera fabriker med etikettmaskiner utrustade med bomullsvarp. När fabriken hade hittats kunde arbetet fortsätta. Genom att vara en del utav hela processen från design till produktion, producerades en vävd nacketikett från Tencel och bomull. Tre andra typer av etiketter tillverkades samtidigt med samma design men i olika material. De färdiga etiketterna testades och jämfördes mot varandra. Två olika tvättest utfördes där även färghärdigheten examinerades efter tvätt och strykning. Ett användartest utfördes för att utvärdera etiketternas olika känsla. Resultaten från arbetet visar att en etikett tillverkad från naturliga material är möjlig att producera i befintlig produktion, med vissa begränsningar. Produktionstiden är långsammare och materialen dyrare för denna etikett. En tvätt under produktion skulle krävas för att klara kraven för dimensionsförändring efter tvätt, då etiketten endast krymper efter första tvätten. Ett annat alternativ är att använda sig av en annan bomullsvarp som blivit behandlat mot krymp, vilket skulle innefatta en investering i nytt varpmaterial. Användartestet påvisar att många tycker om känslan och utseendet av den nya etiketten, och föredrar den över den vanliga polyesteretiketten på grund av dess mjuka känsla.

  • 48.
    Kumar Ramamoorthy, Sunil
    et al.
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Kuzhanthaivelu, Gauthaman
    Bohlén, Martin
    Research Institutes of Sweden.
    Åkesson, Dan
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Waste Management Option for Bioplastics Alongside Conventional Plastics2019Ingår i: IRC 2019 International Research Conference Proceedings, 2019Konferensbidrag (Refereegranskat)
    Abstract [en]

    Bioplastics can be defined as polymers derived partly or completely from biomass. Bioplastics can be biodegradable such as polylactic acid (PLA) and polyhydroxyalkonoates (PHA); or non-biodegradable (biobased polyethylene (bio-PE), polypropylene (bio-PP), polyethylene terephthalate (bio-PET)). The usage of such bioplastics is expected to increase in the future due to new found interest in sustainable materials. At the same time, these plastics become a new type of waste in the recycling stream. Most countries do not have separate bioplastics collection for it to be recycled or composted. After a brief introduction of bioplastics such as PLA in UK, these plastics are once again replaced by conventional plastics by many establishments due to lack of commercial composting. Recycling companies fear the contamination of conventional plastic in the recycling stream and they said they would have to invest in expensive new equipment to separate bioplastics and recycle it separately. Bioplastics are seen as a threat to the recycling industry as bioplastics may degrade during the mechanical recycling process and the properties of the recycled plastics are seriously impacted. This project studies what happens when bioplastics contaminate conventional plastics.

    Three commonly used conventional plastics were selected for this study: polyethylene (PE), polypropylene (PP) and polyethylene terephthalate (PET). In order to simulate contamination, two biopolymers, either polyhydroxyalkanoate (PHA) or thermoplastic starch (TPS) were blended with the conventional polymers. The amount of bioplastics in conventional plastics was either 1% or 5%. The blended plastics were processed again to see the effect of degradation. Mechanical, thermal and morphological properties of these plastics were characterized.

     

    The results from contamination showed that the tensile strength and the modulus of PE was almost unaffected whereas the elongation is clearly reduced indicating the increase in brittleness of the plastic. Generally, it can be said that PP is slightly more sensitive to the contamination than PE. This can be explained by the fact that the melting point of PP is higher than for PE and as a consequence, the biopolymer will degrade more quickly. However, the reduction of the tensile properties for PP is relatively modest. It is also important to notice that when plastics are recovered, there will always be a contamination that will reduce the material properties. The reduction of the tensile properties is not necessary larger than if a non-biodegradable polymer would have contaminated PE or PP. The Charpy impact strength is generally a more sensitive test method towards contamination. Again, PE is relatively unaffected by the contamination but for PP there is a relatively large reduction of the impact properties already at 1% contamination.

    PET is polyester and it is by its very nature more sensitive to degradation than PE and PP. PET also have a much higher melting point than PE and PP and as a consequence the biopolymer will quickly degrade at the processing temperature of PET. As for the tensile strength, PET can tolerate 1% contamination without any reduction of the tensile strength. However, when the impact strength is examined, it is clear that already at 1% contamination, there is a strong reduction of the properties. It can also be seen that presence of TPS is more detrimental to PET than PHA is. This can be explained by the fact that TPS contain reactive hydroxyl groups that can react with the ester bond of PET. This will in other words lead to degradation of PET.

    The thermal properties show the change in the crystallinity. As a general conclusion, it can be said that the plastics become less crystalline when contaminated. The blends were also characterized by SEM. Biphasic morphology can be seen as the two polymers are not truly blendable which also contributes to reduced mechanical properties. Recycling of the contaminated polymer shows an increase in crystallinity. This means that when the polymers are processed, polymer degradation occur causing the polymer chains to gradually become shorter which will enhance the crystallization process.

    The study shows that PE is relatively robust againt contamination, while polypropylene (PP) is somewhat more sensitive and polyethylene terephthalate (PET) can be quite sensitive towards contamination.

  • 49.
    Kumar Ramamoorthy, Sunil
    et al.
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Periyasamy, Aravin Prince
    Technical University Liberec, Liberec, Czech Republic.
    Lavate, Saatish Siddappa
    DKTE’s Textile Engineering Institute, Ichalkaranji, India.
    Eco-friendly Denim Processing2018Ingår i: Handbook of Ecomaterials / [ed] Leticia Myriam Torres Martínez, Springer Publishing Company, 2018Kapitel i bok, del av antologi (Refereegranskat)
    Abstract [en]

    The denim sector is booming worldwide, because of the spread of denim culture. All over the world it has brought with it a trend of fast-changing fashion. Denim washing has emerged as one of the important production routes toward meeting the fast-changing demands of the fashion market. There are huge ecological concerns, as this sector is enormous. Approximately 1500 gallons of water is needed to produce 1.5 pounds of cotton to make one pair of jeans. If this continues, soon it will pose a serious problem to drinking water supplies. It is therefore important to study the environmental impact of denim and find alternative processes. This chapter starts by describing the different types of denim washing techniques. In addition, it discusses the environmental impact of denim dry and wet washing techniques, and the importance of environmentally friendly washing techniques. It also describes the latest denim finishing technologies, comparing their impacts on the environment with those of the classic techniques. Further, the environmental aspects of auxiliaries and washing chemicals are reviewed, followed by a discussion of garment washing and finishing processes.

  • 50.
    Kumar Ramamoorthy, Sunil
    et al.
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Periyasamy, Aravin Prince
    Technical University of Liberec, Liberec, Czech Republic.
    Rwawiire, Samson
    Busitema University, Tororo, Uganda.
    Zhao, Yan
    Soochow University, Suzhou, People’s Republic of China.
    Sustainable Wastewater Treatment Methods for Textile Industry2018Ingår i: Sustainable Innovations in Apparel Production / [ed] Subramanian Senthilkannan Muthu, Singapore: Springer Publishing Company, 2018Kapitel i bok, del av antologi (Refereegranskat)
    Abstract [en]

    All over the world, environmental considerations are now becoming vital factors during the selection of consumer goods which include textiles. According to the World Bank, 20% of water pollution globally is caused by textile processing, which means that these industries produce vast amounts of wastewater. Generally, these effluents contain high levels of suspended solids (SS), phosphates, dyes, salts, organo-pesticides, non-biodegradable organics, and heavy metals. Increase in water scarcity and environmental regulations has led to textile industries to seek for sustainable wastewater treatment methods which help to reduce their water footprint as well as reduce their operational costs. Therefore, sustainable wastewater treatment could be the best choice for the textile industries with respect to the current issues. So, it is important to discuss and champion awareness mechanisms which help to reduce the current issues with respect to the textile wastewater. Therefore, this chapter intends to discuss the various sustainable wastewater treatments, namely granular activated carbon (GAC), electrocoagulation (EC), ultrasonic treatment, an advanced oxidation process (AOP), ozonation, membrane biological reactor (MBR), and sequencing batch reactor (SBR).

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