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  • 1.
    Agnhage, Tove
    et al.
    Högskolan i Borås, Institutionen Textilhögskolan.
    Nierstrasz, Vincent
    Högskolan i Borås, Institutionen Textilhögskolan.
    Perwuelz, A.
    Guan, J.P.
    Chen, G.Q.
    Eco-design innovative methods for fabric finishing2014Konferensbidrag (Övrigt vetenskapligt)
  • 2.
    Agnhage, Tove
    et al.
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Nierstrasz, Vincent
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Zhou, Yuyang
    Högskolan i Borås, Akademin för textil, teknik och ekonomi. Soochow University.
    Guan, Jinping
    Soochow University.
    Perwuelz, Anne
    ENSAIT.
    Behary, Nemeshwaree
    ENSAIT.
    Bioactive and multifunctional textile using plant-based madder dye: Characterization of UV protection ability and antibacterial activity2017Ingår i: Fibers And Polymers, ISSN 1229-9197, E-ISSN 1875-0052, ISSN 1229-9197, Vol. 18, nr 11, s. 2170-2175Artikel i tidskrift (Refereegranskat)
  • 3.
    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

  • 4. Billig, S.
    et al.
    Agrawal, P.B.
    Birkemeyer, C.
    Nierstrasz, Vincent
    Högskolan i Borås, Institutionen Textilhögskolan.
    Warmoeskerken, M.M.C.G.
    Zimmerman, W.
    Biodegradation of diverse PET materials by polyester hydrolases from Thermobifida fusca and Fusarium solani2014Konferensbidrag (Refereegranskat)
  • 5.
    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.
    Author Correction: Effects of ink characteristics and piezo-electric inkjetting parameters on lysozyme activity2022Ingår i: Scientific Reports, E-ISSN 2045-2322, Vol. 12, nr 1, artikel-id 21758Artikel i tidskrift (Övrigt vetenskapligt)
  • 6.
    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.
    Digital inkjet printing of antimicrobial lysozyme on pretreated polyester fabric2022Konferensbidrag (Refereegranskat)
    Abstract [en]

    Lysozyme was inkjet printed on two different polyester fabrics considering several challenges of printing enzymes on synthetic fabric surfaces. Wettability of both the fabrics were improved by alkaline pre-treatment resulting reduction in water contact angle to 60±2 from 95°±3 and to 80°±2 from 115°±2 for thinner and coarser fabric respectively. Activity of lysozyme in the prepared ink was 9240±34 units/ml and reduced to 5946±23 units/ml as of collected after jetting process (before printing on fabric). The formulated ink was effectively inkjet printed on alkali treated polyester fabric for antimicrobial applications. Retention of higher activity of the printed fabric requires further studies on enzyme-fibre binding mechanisms and understanding protein orientation on fabric surface after printing

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  • 7.
    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.
    Effective Pretreatment Routes of Polyethylene Terephthalate Fabric for Digital Inkjet Printing of Enzyme2021Ingår i: Materials Science & Engineering: B. Solid-state Materials for Advanced Technology, ISSN 0921-5107, E-ISSN 1873-4944Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Enzymes immobilized on synthetic polyethylene terephthalate (PET) textile surface by resource‐efficient inkjet printing technology can promote developments for various novel applications. Synthetic fabrics often require adequate pretreatments to facilitate such printing process. This work discusses PET–woven fabric pretreatment routes to improve wettability by alkaline, enzymatic, and plasma processes for effective printing of lysozyme using an industrial piezoelectric printhead. Results indicate that all pretreated samples contain a similar amount of enzymes upon printing. Plasma treated fabrics show relatively more hydrophilic surface characteristics, better protein binding stability, and lower retained activity. Alkali and cutinase‐treated samples possess relatively higher activity due to the greater amount of enzyme desorption to substrate solution. Depending on respective enzyme‐binding stability, a combination of a well-pretreated surface and inkjet as preferential placement technology, the approach of this study can be used as a facile enzyme immobilization method for suitable applications, for example, controlled‐release and bio‐sensing.

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  • 8.
    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, 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.

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  • 9.
    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.
    Enzyme immobilization on textiles by inkjet printing for advanced applications2019Konferensbidrag (Refereegranskat)
    Abstract [en]

    Immobilization of enzymes on textiles can impart a range of advanced applications e.g. anti-microbial, controlled release, drug delivery and bio-sensing (Wehrschütz-Sigl et al., 2010). Such applications enable minimal consumption, recovery, and reusability of these valuable bio-materials compared to their conventional textile applications in surface cleaning and finishing (Araujo et al., 2008). Methods used for immobilization can play important roles to ensure precise, flexible and contamination free application. Compared to many of the conventional methods of textile immobilization such as coating and screen-printing, digital inkjet technology offers many benefits for such advanced applications (Kan and Yuen, 2012). Among various inkjet technologies, drop-on-demand piezoelectric printing is a promising resource-efficient technology for enzyme immobilization. 

     

    The enzymes should retain high activity after the immobilization process. Various factors involved during inkjet printing (Saunders and Derby, 2014) and fabric characteristics (Mohamed et al., 2008) can influence this enzymatic activity. Factors concerning the inkjet procedure include rheology and ionic nature of ink along with the shear force and waveform generated inside a piezoelectric printhead (Magdassi, 2010). Factors dependent upon fabric characteristics include surface structure, pore size distribution, and binding mechanism (Nierstrasz and Warmoeskerken, 2003). In this work, we have studied the effects of inkjet procedures on enzymatic activity. Lysozyme being a stable and well-studied enzyme was chosen for our experiments. A Xennia Carnelian printer with a Dimatix QS10 industrial printhead was used for inkjetting. Lytic activity of lysozyme was studied by a UV-Vis spectrophotometer against decrease of Micrococcus lysodeikticus cell concentration at 450 nm. Results showed ca. 10-15% activity reduction of the jetted lysozyme ink. As all the ink and printer parameters were optimized, the probable reason for such reduction could be the effect of shear forces inside the printhead on three-dimensional conformation of lysozyme. In conclusion, our formulated lysozyme ink showed potential for printing textiles with probable activity reduction that require further investigation. 

  • 10.
    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.
    Functionalization of textiles with enzymes by inkjet printing2018Konferensbidrag (Refereegranskat)
    Abstract [en]

    The catalytic activity of the enzymes can be introduced to textile surfaces for bio-sensing applications by immobilizing them through a resource-efficient deposition method such as inkjet printing [1]. Contrary to conventional dispensing methods, drop-on-demand inkjet printing can provide with high precision deposition of these enzymes along with flexibility for small-scale production [2]. To the best of our knowledge, studies on the inkjetting of enzymes are limited and often uses a modified/adapted commercial paper printer for jetting [3]. Additionally, the effect of ink formulation and printing condition variables on the activity of enzyme are not well explored. Many of such variables suggested for jetting of proteins [4] includes e.g. ink rheology, operating temperature, drop size retention, and the shear force acting on the ink. In our research effect of these variables are studied using a digital inkjet printer (Xennia Carnelian) with a Sapphire QS10 piezo-electric print head (Fujifilm Dimatix, USA). Lysozyme is used as a model enzyme for printing due to its well-known structure and catalytic mechanism. Effect of temperature and shear force development within the print head on lysozyme activity is investigated. Additionally, pre-treatment of the fabric to improve ink adhesion through various surface activation processes are studied. Finally, remaining activity of the printed enzymes over washing is evaluated to ensure the fastness property.

    Acknowledgment

    This research project is funded by University of Borås, Sweden.

    References

    [1]     Li J, Rossignol F, Macdonald J. Inkjet printing for biosensor fabrication: combining chemistry and technology for advanced manufacturing. Lab on a Chip 2015;15(12):2538-2558.

    [2]     Nierstrasz V, Yu J, Seipel S. Towards more flexible, sustainable and energy-efficient textile functionalization processes: Digital inkjet in functional and smart textile production. In: 9th Aachen-Dresden International Textile Conference 2015; 2015.

    [3]     Yamazoe H. Fabrication of protein micropatterns using a functional substrate with convertible protein-adsorption surface properties. J Biomed Mater Res A 2012;100(2):362-9.

    [4]     Delaney JT, Smith PJ, Schubert US. Inkjet printing of proteins. Soft Matter 2009;5(24):4866-4877.

  • 11.
    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.
    Inkjet printing of enzymes on synthetic fabrics2022Konferensbidrag (Refereegranskat)
    Abstract [en]

    Enzymes can be immobilized on textiles to impart anti-microbial properties in a more environment-friendly manner compared to conventional biocide-based solutions. Such application requires ensuring precise, flexible and contamination-free immobilization methods that can be offered by digital printing compared to coating or screen-printing techniques. Drop-on-demand inkjet printing is a resource-efficient technology that can ensure these requirements. The use of polyester and polyamide-based fabrics is rising for applications ranging from apparel and home furnishing to hygiene and medical textiles. These fibers offer superior chemical, physical, and mechanical properties due to their inert nature but challenge the printing process due to hydrophobicity and lack of functional groups. Lysozyme and tyrosinase are two enzymes showing great potential for grafting on synthetic fabrics paving the way to use them for inkjet printing as well.

    Challenges for inkjet printing of enzymes on synthetic fabric surfaces come in multiple forms i.e. ink recipe formation, printer mechanics and fabric surface characteristics. The ink must maintain a suitable viscosity and surface tension for effective drop ejection and a feasible ionic nature for enzyme activity. Then, the enzyme must be able to sustain the temperature and shear stress generated inside an inkjet printhead. Finally, influential fabric characteristics include surface structure, pore size distribution, evaporation rate and binding mechanism. By considering these parameters, lysozyme and tyrosinase were successfully printed on variously modified synthetic fabrics using a combination of sustainable technologies.

  • 12.
    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)
  • 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.
    Piezoelectric inkjet printing of tyrosinase (polyphenol oxidase) enzyme on atmospheric plasma treated polyamide fabric2022Ingår i: Scientific Reports, E-ISSN 2045-2322, Vol. 12, nr 1, artikel-id 6828Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Tyrosinase enzyme was digitally printed on plasma pretreated polyamide-6,6 fabric using several sustainable technologies. Ink containing carboxymethyl cellulose was found to be the most suitable viscosity modifier for this enzyme. Before and after being deposited on the fabric surface, the printed inks retained enzyme activity of 69% and 60%, respectively, compared to activity prior printing process. A good number of the printed enzyme was found to be strongly adsorbed on the fabric surface even after several rinsing cycles due to surface activation by plasma treatment. Rinsed out fabrics retained a maximum activity of 34% resulting from the well-adsorbed enzymes. The activity of tyrosinase on printed fabrics was more stable than ink solution for at least 60 days. Effects of pH, temperature and enzyme kinetics on ink solution and printed fabrics were assessed. Tyrosinase printed synthetic fabrics can be utilized for a range of applications from biosensing and wastewater treatment to cultural heritage works.

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  • 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.
    Sequential Inkjet Printing of Lysozyme and Tyrosinase on Polyamide Fabric: Sustainable Enzyme Binding on Textile Surface2022Ingår i: Advanced Materials Interfaces, ISSN 2196-7350, Vol. 9, nr 22, artikel-id 2200723Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    An ink containing tyrosinase catalyzes the tyrosine residues on lysozyme protein to bind it on a plasma-treated polyamide-6,6 (PA) fabric. Inkjet printing enables controlled and sequential deposition of two enzymes on PA which is necessary for proper binding. The effect of different printing sequences on crosslinking stability and enzymatic activity is presented. The lysozyme bound on the fabric shows satisfactory antimicrobial activity. The printed fabric retains about 68% of the ink activity when tyrosinase is printed before lysozyme. Further, this fabric retains about 24% of the initial activity up to four reuses. The fabric shows acceptable inhibition of bacterial growth and retains almost half of its initial activity when cold stored for a month. This work shows the potential of protein binding on textile surface using various means of sustainable technologies, namely enzyme, inkjet, and plasma. 

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  • 15.
    Chiango, Ludovica Beatrice
    et al.
    Dipartimento di Scienza Applicata e Tecnologia, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy.
    Buffo, Antonio
    Dipartimento di Scienza Applicata e Tecnologia, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy.
    Vanni, Marco
    Dipartimento di Scienza Applicata e Tecnologia, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy.
    Nierstrasz, Vincent
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Ferri, Ada
    Dipartimento di Scienza Applicata e Tecnologia, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy.
    Simulation of an industrial scale scCO2 beam dyeing process2022Ingår i: Journal of CO2 Utilization, ISSN 2212-9820, E-ISSN 2212-9839, Vol. 64, artikel-id 102147Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    An industrial dyeing process in supercritical carbon dioxide has been modelled with computational fluid dynamics using Ansys Fluent software. In order to investigate the distribution of the dye carrier fluid, the flow resistance of the fabric has been accurately characterised. For this purpose, in the first part of the work a plain-woven fabric geometry was created in the open software Tex-Gen and modelled in Ansys Fluent to predict the permeation of fluid through the pores of the fabric material and to estimate the relationship between local fluid velocity and pressure drop. The second part of the study focused on evaluating the influence of beam structure, inlet flow rate, fabric height on the fluid flow through the fabric, which must be uniform to achieve a homogeneous level of dyeing. From the simulations the main obstacle to achieving a uniform flow velocity in the fabric is the pressure rise that occurs in the beam and creates a slight difference in permeation velocity between the two axial ends of the fabric; other disturbances, such as the effect of the perforated structure of the beam, are usually minor. Due to the low viscosity of supercritical carbon dioxide, inertial losses predominate over viscous losses in the porous medium. This means that approaches based only on the permeability of the fabric and the application of Darcy's law are inadequate to correctly predict the response of a dyeing unit when using carbon dioxide.

  • 16. 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)
  • 17. Ciera, L
    et al.
    Beladjal, L
    Almeras, X
    Gheysens, T
    Nierstrasz, Vincent
    Högskolan i Borås, Institutionen Textilhögskolan.
    Van Langenhove, L
    Mertens, J
    Resistance of Bacillus Amyloliquefaciens spores to melt extrusion process conditions2014Ingår i: Fibres & Textiles in Eastern Europe, ISSN 1230-3666, Vol. 22, nr 2, s. 102-107Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    With the increasing demand for functionalised textile materials, industry is focusing on research that will add novel properties to textiles. Bioactive compounds and their benefits have been and are still considered as a possible source of unique functionalities to be explored. However, incorporating bioactive compounds into textiles and their resistance to textile process parameters has not yet been studied. In this study, we developed a system to study the resistance of Bacillus amyloliquefaciens spores against melt extrusion process parameters, like temperature (21, 200, 250, 300 °C), pressure (0.1, 0.6 and 1.0 MPa) and residence time (0, 1 and 10 minutes). The spores were successfully embedded in PET (polyethylene terephthalate) films and fibres through melt extrusion. Afterwards the survival rate of the spores was determined after extrusion and the data was used to develop a quadratic equation that relates the survival rate to the spore concentration.

  • 18. Ciera, L.
    et al.
    Beladjal, L.
    Almeras, X.
    Gheysens, T.
    Van Landuyt, L.
    Mertens, J.
    Nierstrasz, V.
    Högskolan i Borås, Institutionen Textilhögskolan.
    Van Langenhove, L.
    Morphological and material properties of polyethyleneterephthalate (PET) fibres with spores incorporated2014Ingår i: Fibres & Textiles in Eastern Europe, ISSN 1230-3666, Vol. 22, nr 4, s. 29-36Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Owing to the current demand for textiles with new functionalities and improved properties, there has been a continuous effort to modify Polyethylene terephthalate (PET) materials. In our previous study, we demonstrated that Bacillus amyloliquefaciens spores can be incorporated into PET fibres during extrusion. However, the extent to which they can be incorporated without fundamentally changing the properties of the fibres is unknown. In this work, scanning electron microscopy (SEM), transmission electron microscopy (TEM), optical microscopy (OM), differential scanning calorimetry (DSC), a Favimat tensile tester, and Raman and Fourier transform infrared spectroscopy (FT-IR) were used to study the properties of PET/spore fibres. The tensile strength, Young’s modulus and elongation at break were dependent on the spore concentration. Additionally the degree of crystallinity increased slightly, whereas the melting and crystallisation temperatures remained constant at all spore concentration levels. Nevertheless the properties of the fibres fall within the acceptable range of variation and are found to be as good as normal PET fibres.

  • 19. Ciera, Lucy
    et al.
    Gheysens, Tom
    Almeras, Xavier
    Nierstrasz, Vincent
    Högskolan i Borås, Institutionen Textilhögskolan.
    Van Langenhove, Lieva
    Bio-based mosquito repellent textiles to fight malaria and dengue2012Konferensbidrag (Övrigt vetenskapligt)
  • 20. Ciera, Lucy
    et al.
    Nierstrasz, Vincent
    Högskolan i Borås, Institutionen Textilhögskolan.
    Van Langenhove, Lieva
    NO BUG: Biobased mosquitoes repellent personal protective equipment (PPE)2012Konferensbidrag (Övrigt vetenskapligt)
    Abstract [en]

    In tropical regions (South America, Asia and Africa) diseases like malaria and dengue cause many deaths. These diseases are transmitted through mosquitoes bites (Anopheles sp. and Aedes aegypti respectively). The current practice to protect against transmission of these diseases is by use of mosquito repellents. Common mosquito repellents used today are synthetic in nature and are suspected or have been proved to be harmful to the user and environment (e.g. DEET, DDT, dimethylphylphthalate, parathion etc). This research work is part of the FP7 No-Bug project (Novel release system and bio-based utilities for insect repellent textiles). The main interest of the project is personal protective textiles against insects (mosquitoes) for application not only in tropical areas where vector borne diseases are a major threat to the public health but also in European countries where the presence of mosquitoes can be nuisance. To solve the problems associated with the synthetic repellents, novel bio-repellents will be identified and an innovative slow release system established. Our aim is to develop a novel insect repellent personal protective equipment to be used by professional travelers (education, business, research, volunteers, missionary and peace corps) when they travel for duty in mosquito prone areas. The target mosquitoes are Anopheles stephensi which cause malaria and Aedes aegypti that transmit dengue.

  • 21.
    Dural-Erem, Aysin
    et al.
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Biswas, Tuser
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Nierstrasz, Vincent
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Incorporation of probiotics on textile surface by sol–gel coating2018Ingår i: Journal of Industrial Textiles, ISSN 1528-0837, E-ISSN 1530-8057, Vol. 48, nr 5, s. 954-965Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Development of biocide-based antimicrobial textiles is proving to be a concern for the economy, and more evidently, for the environment and health. On the contrary, probiotic (beneficial bacteria) can replace these traditional biocides in order to overcome the toxicity and resistance problems. This paper elaborates an adapted sol-gel coating process to embed such beneficial spores on the polyester woven surface, and their viability is studied along with the characterization of the physical properties of the coated fabric. The results illustrate the successful incorporation of the beneficial spores with an adequate number of living organisms (even after repeated washing cycles), sufficient tensile strength, and good abrasion resistance properties with the opportunity to improve surface wettability maintaining sufficient adhesion between the fibre and the coated layer.

  • 22. Dural-Erem, Aysin
    et al.
    Niehaus, Kim-Laura
    Nierstrasz, Vincent
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Development of Probiotic Printings for Polyester Fabrics.2018Ingår i: Journal of Textiles and Engineer (Tekstil ve Mühendis), ISSN 1300-7599, Vol. 25, nr 111, s. 208-213Artikel i tidskrift (Refereegranskat)
  • 23. Dural-Erem, Aysin
    et al.
    Nierstrasz, Vincent
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Development of coating for incorporation of beneficial spores on hospital textiles2018Ingår i: Fibres and Textiles in Eastern Europe, ISSN 1230-3666, Vol. 5, nr 131, s. 59-62Artikel i tidskrift (Refereegranskat)
  • 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.

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  • 25.
    Eutionnat-Diffo, Prisca
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Development of Flexible and Conductive ImmiscibleThermoplastic/Elastomer Monofilament for SmartTextiles Applications Using 3D Printing2020Ingår i: Polymers, E-ISSN 2073-4360Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    3D printing utilized as a direct deposition of conductive polymeric materials onto textilesreveals to be an attractive technique in the development of functional textiles. However, the conductivefillers—filled thermoplastic polymers commonly used in the development of functional textiles through3D printing technology and most specifically through Fused DepositionModeling (FDM) process—arenot appropriate for textile applications as they are excessively brittle and fragile at room temperature.Indeed, a large amount of fillers is incorporated into the polymers to attain the percolation thresholdincreasing their viscosity and stiffness. For this reason, this study focuses on enhancing the flexibility,stress and strain at rupture and electrical conductivity of 3D-printed conductive polymer onto textiles bydeveloping various immiscible polymer blends. A phase is composed of a conductive polymer composite(CPC)made of a carbon nanotubes (CNT) and highly structured carbon black (KB)- filled low-densitypolyethylene (LDPE) and another one of propylene-based elastomer (PBE) blends. Two requirements areessential to create flexible and highly conductive monofilaments for 3D-printed polymers onto textilematerials applications. First, the co-continuity of both the thermoplastic and the elastomer phases and thelocation of the conductive fillers in the thermoplastic phase or at the interface of the two immisciblepolymers are necessary to preserve the flexibility of the elastomer while decreasing the global amountof charges in the blends. In the present work based on theoretical models, when using a two-stepmelt process, the KB and CNT particles are found to be both preferentially located at the LDPE/PBEinterface. Moreover, in the case of the two-step extrusion, SEM characterization showed that the KBparticles were located in the LDPE while the CNT were mainly at the LDPE/PBE interface and TEManalysis demonstrated that KB and CNT nanoparticles were in LDPE and at the interface. For one-stepextrusion, it was found that both KB and CNT are in the PBE and LDPE phases. These selectivelocations play a key role in extending the co-continuity of the LDPE and PBE phases over a much largercomposition range. Therefore, the melt flow index and the electrical conductivity of monofilament,the deformation under compression, the strain and stress and the electrical conductivity of the 3D-printedconducting polymer composite onto textiles were significantly improved with KB and CNT-filledLDPE/PBE blends compared to KB and CNT-filled LDPE separately. The two-step extrusion processed60%(LDPE16.7% KB + 4.2% CNT)/40 PBE blends presented the best properties and almost similar to theones of the textile materials and henceforth, could be a better material for functional textile developmentthrough 3D printing onto textiles.

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  • 26.
    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, 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 technique used more and more to develop smart textiles, one of the main challenges is to demonstrate equal or better mechanical resistance, durability and comfort than those of the textile substrates before deposition process. This article focuses on studying the impact of the textile properties and printing platform temperature on the tensile and deformations of non-conductive and conductive poly lactic acid (PLA) filaments deposited onto polyethylene terephthalate (PET) textiles through 3D printing process and optimizing them using theoretical and statistical models. The results demonstrate that the deposition process affects the tensile properties of the printed textile in comparison with the ones of the textiles. The stress and strain at rupture of the first 3D printed PLA layer deposited onto PET textile material reveal to be a combination of those of the printed layer and the PET fabric due to the lower flexibility and diffusion of the polymeric printed track through the textile fabric leading to a weak adhesion at the polymer/textile interface. Besides, printing platform temperature and textile properties influence 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 the tensile properties of the extruded polymeric materials. The elastic, total and permanent deformations of the 3D-printed PLA on PET fabrics are lower than the ones of the fabric before polymer deposition which demonstrates a better dimensional stability, higher stiffness and lower flexibility of these materials.

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  • 27.
    Eutionnat-Diffo, Prisca
    et al.
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Chen, Yan
    Högskolan i Borås, Akademin för textil, teknik och ekonomi. College of Textile and Clothing Engineering, Soochow University.
    Guan, Jinping
    College of Textile and Clothing Engineering, Soochow University.
    Cayla, Aurelie
    GEMTEX–Laboratoire de Génie et Matériaux Textiles.
    Campagne, Christine
    Nierstrasz, Vincent
    Study of the Wear Resistance of Conductive Poly Lactic Acid Monofilament 3D Printed onto Polyethylene Terephthalate Woven Materials2020Ingår i: Materials, Vol. 10, nr 13, artikel-id 2334Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Wear resistance of conductive Poly Lactic Acid monofilament 3D printed onto textiles, through Fused Deposition Modeling (FDM) process and their electrical conductivity after abrasion are important to consider in the development of smart textiles with preserved mechanical and electrical properties. The study aims at investigating the weight loss after abrasion and end point of such materials, understanding the influence of the textile properties and 3D printing process parameters and studying the impact of the abrasion process on the electrical conductivity property of the 3D printed conductive polymers onto textiles. The effects of the 3D printing process and the printing parameters on the structural properties of textiles, such as the thickness of the conductive Poly Lactic Acid (PLA) 3D printed onto polyethylene terephthalate (PET) textile and the average pore sizes of its surface are also investigated. Findings demonstrate that the textile properties, such as the pattern and the process settings, for instance, the printing bed temperature, impact significantly the abrasion resistance of 3D printed conductive Poly Lactic Acid (PLA) onto PET woven textiles. Due to the higher capacity of the surface structure and stronger fiber-to-fiber cohesion, the 3D printed conductive polymer deposited onto textiles through Fused Deposition Modeling process have a higher abrasion resistance and lower weight loss after abrasion compared to the original fabrics. After printing the mean pore size, localized at the surface of the 3D-printed PLA onto PET textiles, is five to eight times smaller than the one of the pores localized at the surface of the PET fabrics prior to 3D printing. Finally, the abrasion process did considerably impact the electrical conductivity of 3D printed conductive PLA onto PET fabric.

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  • 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.

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  • 30.
    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.
    Christine, Campagne
    ENSAIT.
    Zeng, Xianyi
    ENSAIT.
    Aurelie, Cayla
    ENSAIT.
    CHEN, Yan
    Soochow university.
    Guan, Jinping
    Soochow university.
    Study of the electrical resistance of conductive PLA deposited onto fabrics through 3D printing2019Konferensbidrag (Refereegranskat)
    Abstract [en]

    In this study, conductive tracks are integrated onto textiles through Fused Deposition Modelling (FDM) process and the correlation between the FDM process parameters, the textile properties (the porosity and the structure for instance) and the electrical resistance of the composites is investigated. Many researchers have studied the electrical conductivity of polymers composites using incorporation of conductive fillers such as carbon black or carbon nanotube–polymer composites and the effect of the 3D printing process parameters, such as extruder temperature, on the electrical properties [1–7]. However, in this paper, in addition to study and understand the electrical properties of these conductive materials deposited onto textiles, they are maximized to guarantee the use of the textile composites in smart textiles field.Findings are very promising and important in the development of functionalized textiles as they demonstrate the feasibility of enhancing the electrical conductivity of textile composite materials through theoretical models based on the experimental data.

  • 31.
    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.

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  • 32.
    Gtadesse, Melkie
    et al.
    Bahir Dar University, Ethiopian Institutes of Textile and Fashion Technology, 608 Bahir Dar, Ethiopia.
    Loghin, Emil-Constantin
    Bahir Dar University, Ethiopian Institutes of Textile and Fashion Technology, 608 Bahir Dar, Ethiopia.
    Nierstrasz, Vincent
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Loghin, Maria-Carmen
    Bahir Dar University, Ethiopian Institutes of Textile and Fashion Technology, 608 Bahir Dar, Ethiopia.
    Quality inspection and prediction of the comfort of fabrics finished with functional polymers2020Ingår i: INDUSTRIA TEXTILA, ISSN 1222-5347, Vol. 71, nr 4, s. 340-349Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Textile’s primary hand (HV) and total hand values (THV) are very important parameters and are used to identify the quality of clothing comfort. This paper aims to predict the HV and THV of the fabrics finished with functional polymers by applying Kawabata’s translation equations. The mechanical properties were achieved using Kawabata’s fabric evaluation system (KES-F) and the inference/interpretation was drawn. Then, HV and THV predictions were performed by applying Kawabata’s translation equations of the KN-101 and KN-301 series. The KES-F result confirmed that it is possible to observe the operative finishing effect on the mechanical properties of fabrics. The prediction results show that the total quality comfort of the functional fabrics could able be estimated by the equation developed by Kawabata; the calculated errors (similar to 0.66) were within the range of the standard deviations (similar to 0.78) of the samples between the predicted and ranked THV. The experimental and the calculated primary hand values showed strong correlation coefficients up to similar to 0.98 which is significant at 0.001 confidence levels. As actual functional fabrics with various surface properties were provided to estimate their tactile comfort via the equations, the result verified that the equation is reliable for the tactile comfort evaluation and grading.

  • 33.
    Hashemi Sanatgar, Razieh
    et al.
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Campagne, Christine
    Nierstrasz, Vincent
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Adhesion of polymers on textile fabrics using 3D print technology with fused deposition modelling technique2015Ingår i: Proceedings of the 9th Aachen-Dresden International Textile Conference, 2015, s. 198-Konferensbidrag (Övrigt vetenskapligt)
  • 34.
    Hashemi Sanatgar, Razieh
    et al.
    Högskolan i Borås, Akademin för textil, teknik och ekonomi. ENSAIT.
    Campagne, Christine
    ENSAIT.
    Nierstrasz, Vincent
    Investigation of the adhesion properties of direct 3D printing of polymers and nanocomposites on textiles: Effect of FDM printing process parameters.2017Ingår i: Applied Surface Science, ISSN 0169-4332, E-ISSN 1873-5584, Vol. 403, s. 551-563Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    In this paper, 3D printing as a novel printing process was considered for deposition of polymers on synthetic fabrics to introduce more flexible, resource-efficient and cost effective textile functionalization processes than conventional printing process like screen and inkjet printing. The aim is to develop an integrated or tailored production process for smart and functional textiles which avoid unnecessary use of water, energy, chemicals and minimize the waste to improve ecological footprint and productivity. Adhesion of polymer and nanocomposite layers which were 3D printed directly onto the textile fabrics using fused deposition modeling (FDM) technique was investigated. Different variables which may affect the adhesion properties including 3D printing process parameters, fabric type and filler type incorporated in polymer were considered. A rectangular shape according to the peeling standard was designed as 3D computer-aided design (CAD) to find out the effect of the different variables. The polymers were printed in different series of experimental design: nylon on polyamide 66 (PA66) fabrics, polylactic acid (PLA) on PA66 fabric, PLA on PLA fabric, and finally nanosize carbon black/PLA (CB/PLA) and multi-wall carbon nanotubes/PLA (CNT/PLA) nanocomposites on PLA fabrics. The adhesion forces were quantified using the innovative sample preparing method combining with the peeling standard method. Results showed that different variables of 3D printing process like extruder temperature, platform temperature and printing speed can have significant effect on adhesion force of polymers to fabrics while direct 3D printing. A model was proposed specifically for deposition of a commercial 3D printer Nylon filament on PA66 fabrics. In the following, among the printed polymers, PLA and its composites had high adhesion force to PLA fabrics.

  • 35.
    Hashemi Sanatgar, Razieh
    et al.
    Högskolan i Borås, Akademin för textil, teknik och ekonomi. ENSAIT.
    Campagne, Christine
    Nierstrasz, Vincent
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Investigation on the effect of different variables of 3D printing process on adhesion of polymers to fabrics2016Konferensbidrag (Refereegranskat)
    Abstract [en]

    In this paper, 3D printing as an alternative to conventional printing processes like inkjet printing and screen printing was considered for deposition of polymers on fabrics. The 3D printing process parameters were optimized to deposit film and patterns on fabric. Different parameters such as extruder temperature, platform temperature and printing speed showed significant various effects on adhesion force of polymers to fabrics.

  • 36.
    Hashemi Sanatgar, Razieh
    et al.
    Högskolan i Borås, Akademin för textil, teknik och ekonomi. ENSAIT.
    Campagne, Christine
    Nierstrasz, Vincent
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Manufacturing of Poly lactic acid conductive composites for 3D printing2017Konferensbidrag (Refereegranskat)
  • 37.
    Hashemi Sanatgar, Razieh
    et al.
    Högskolan i Borås, Akademin för textil, teknik och ekonomi. ENSAIT.
    Cayla, Aurelie
    Campagne, Christine
    Nierstrasz, Vincent
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    3D printed polymers and nanocomposites on textiles: characterization and adhesion properties2017Konferensbidrag (Refereegranskat)
  • 38.
    Hashemi Sanatgar, Razieh
    et al.
    Högskolan i Borås, Akademin för textil, teknik och ekonomi. ENSAIT.
    Cayla, Aurelie
    Campagne, Christine
    Nierstrasz, Vincent
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    3D printing on fabrics: a novel process for functional and smart textiles2017Konferensbidrag (Refereegranskat)
  • 39.
    Hashemi Sanatgar, Razieh
    et al.
    Högskolan i Borås, Akademin för textil, teknik och ekonomi. ENSAIT.
    Cayla, Aurelie
    Campagne, Christine
    Nierstrasz, Vincent
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Manufacturing of polylactic acid nanocomposite 3D printer filaments for smart textile applications2017Konferensbidrag (Refereegranskat)
    Abstract [en]

    In this paper, manufacturing of polylactic acid nanocomposite 3D printer filaments was considered for smart textile applications. 3D printing process was applied as a novel process for deposition of nanocomposites on PLA fabrics to introduce more flexible, resourceefficient and cost effective textile functionalization processes than conventional printing process like screen and inkjet printing. The aim is to develop an integrated or tailored production process for smart and functional textiles which avoid unnecessary use of water, energy, chemicals and minimize the waste to improve ecological footprint and productivity.

  • 40.
    Hashemi Sanatgar, Razieh
    et al.
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Cayla, Aurelie
    Campagne, Christine
    Nierstrasz, Vincent
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Morphological and electrical characterization of conductive polylactic acid based nanocomposite before and after FDM 3D printing2018Ingår i: Journal of Applied Polymer Science, ISSN 0021-8995, E-ISSN 1097-4628, Vol. 136, nr 6, s. 1044-1053Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    3D printing holds strong potential for the formation of a new class of multifunctional nanocomposites. Therefore, both the nanocomposites and 3D printing communities need to make more collaborations and innovations for developing and processing of new polymers and composites to get benefit of functionalities of 3D printed nanocomposites. The contribution of this paper is the creation of 3D printable filaments from conductive polymer nanocomposites using a melt mixing process. Multi-walled carbon nanotubes (MWNT) and high-structured carbon black (Ketjenblack) (KB) were incorporated into polylactic acid. The percolation threshold of MWNT composites is 0.54 wt.% and of KB composites is 1.7 wt.% by four-point resistance measurement method. In the similar melt mixing process, there was no dependence of diameter of produced 3D printer filaments on the MWNT loading, instead the diameter was dependent on the KB loading and increased with increasing the filler amount. The conductivity of extruded filaments from 3D printer in low filler contents decreases with increasing extruder temperature, yet in higher filler contents there is no effect of extruder temperature on conductivity. Finally, the resistance decreases exponentially with the increase of cross sectional area of 3D printed tracks.

  • 41.
    Hashemi Sanatgar, Razieh
    et al.
    Högskolan i Borås, Akademin för textil, teknik och ekonomi. NSAIT, ULR 2461-GEMTEX-Génie et Matériaux Textiles, Université de Lille, F-59000 Lille, France; .College of Textile and Clothing Engineering, Soochow University, Suzhou 215006, China..
    Cayla, Aurélie
    ENSAIT, ULR 2461—GEMTEX—Génie et Matériaux Textiles, Université de Lille, F-59000 Lille, France.
    Guan, Jinping
    College of Textile and Clothing Engineering, Soochow University, Suzhou 215006, China.
    Chen, Guoqiang
    College of Textile and Clothing Engineering, Soochow University, Suzhou 215006, China.
    Nierstrasz, Vincent
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Campagne, Christine
    ENSAIT, ULR 2461—GEMTEX—Génie et Matériaux Textiles, Université de Lille, F-59000 Lille, France.
    Piezoresistive Properties of 3D-Printed Polylactic Acid (PLA) Nanocomposites2022Ingår i: Polymers, E-ISSN 2073-4360, Vol. 14, nr 15, artikel-id 2981Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    An increasing interest is focused on the application of 3D printing for sensor manufacturing. Using 3D printing technology offers a new approach to the fabrication of sensors that are both geometrically and functionally complex. This work presents the analysis of the 3D-printed thermoplastic nanocomposites compress under the applied force. The response for the corresponding resistance changes versus applied load is obtained to evaluate the effectiveness of the printed layer as a pressure/force sensor. Multi-walled carbon nanotubes (MWNT) and high-structured carbon black (Ketjenblack) (KB) in the polylactic acid (PLA) matrix were extruded to develop 3D-printable filaments. The electrical and piezoresistive behaviors of the created 3D-printed layers were investigated. The percolation threshold of MWNT and KB 3D-printed layers are 1 wt.% and 4 wt.%, respectively. The PLA/1 wt.% MWNT 3D-printed layers with 1 mm thickness exhibit a negative pressure coefficient (NPC) characterized by a decrease of about one decade in resistance with increasing compressive loadings up to 18 N with a maximum strain up to about 16%. In the cyclic mode with a 1 N/min force rate, the PLA/1 wt.% MWNT 3D-printed layers showed good performance with the piezoresistive coefficient or gauge factor (G) of 7.6 obtained with the amplitude of the piezoresistive response (Ar) of about -0.8. KB composites could not show stable piezoresistive responses in a cyclic mode. However, under high force rate compression, the PLA/4 wt.% KB 3D-printed layers led to responses of large sensitivity (Ar = −0.90) and were exempt from noise with a high value of G = 47.6 in the first cycle, which is a highly efficient piezoresistive behavior.

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  • 42.
    Iyer, Sweta
    et al.
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Behary, Nemeshwaree
    ENSAIT.
    Guan, Jinping
    Soochow university.
    Nierstrasz, Vincent
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Toward Bioluminescent Materials by Plasma Treatment of Microfibrous Nonwovens, Followed by Immobilization of One or Both Enzyme(s) (Luciferase and FMN Reductase) Involved in Luminescent Bacteria2020Ingår i: ACS Applied Bio Materials, E-ISSN 2576-6422Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Bioluminescent living organisms emit light through a specific biocatalyzed reaction involving a luciferin substrate and a luciferase enzyme. The present work investigated the possibility of creating optimal luminescence by immobilization of one or both the enzymes Luciferase (Luc) and FMN reductase (Red) involved in a bioluminescent bacterial system onto a plasma-activated microfibrous PET nonwoven. Parameters affecting the catalytic activity and efficiency of the bacterial system in aqueous medium were determined by luminescence intensity measurements using a luminometer. Two types of plasma, air atmospheric plasma (ATMP) and cold remote plasma (CRPNO) treatment, were used to activate the PET nonwoven. Further, one or both enzyme(s) were immobilized using a physical adsorption technique, without or with the use of natural biopolymers (gelatin and starch) and bovine serum albumin-BSA protein, to improve enzyme stability and activity. Coimmobilization of both Red and Luc enzymes on the CRPNO plasma-activated nonwoven in the presence of BSA led to the maximum luminescence. As high as 60,000 RLU equivalent to that of an LED light used for calibration was observed and showed stable intensity up to 6 min. Fiber surface analysis was tested using wettability tests (water contact angle and capillary uptake), while scanning electron microscopy, atomic force microscopy, and electron spectroscopy for chemical analysis showed changes in fiber surface morphology and chemical functional groups. A considerable increase in “N” atom content after coimmobilization of enzymes in the presence of BSA was detected. This study is the first successful attempt to use a biomimetic strategy for immobilization of enzymes involved in bacterial luminescence on a plasma-activated microfibrous nonwoven in an attempt to attain bioluminescent materials.

  • 43.
    Iyer, Sweta
    et al.
    Högskolan i Borås, Akademin för textil, teknik och ekonomi. University of Borås.
    Behary, Nemeshwaree
    ENSAIT.
    Guan, Jinping
    Soochow university.
    Orhan, Mehmet
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Nierstrasz, Vincent
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Color-changing intensified light-emitting multifunctional textiles via digital printing of biobased flavin2020Ingår i: RSC Advances, E-ISSN 2046-2069Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Flavin mononucleotide (biobased flavin), widely known as FMN, possesses intrinsic fluorescence characteristics. This study presents a sustainable approach for fabricating color-changing intensified light-emitting textiles using the natural compound FMN via digital printing technologies such as inkjet and chromojet. The FMN based ink formulation was prepared at 5 different concentrations using water and glycerol-based systems and printed on cotton duck white (CD), mercerized cotton (MC), and polyester (PET) textile woven samples. After characterizing the printing inks (viscosity and surface tension), the photophysical and physicochemical properties of the printed textiles were investigated using FTIR, UV/visible spectrophotometry, and fluorimetry. Furthermore, photodegradation properties were studied after irradiation under UV (370 nm) and visible (white) light. Two prominent absorption peaks were observed at around 370 nm and 450 nm on K/S spectral curves because of the functionalization of FMN on the textiles via digital printing along with the highest fluorescence intensities obtained for cotton textiles. Before light irradiation, the printed textiles exhibited greenish-yellow fluorescence at 535 nm for excitation at 370 nm. The fluorescence intensity varied as a function of the FMN concentration and the solvent system (water/glycerol). With 0.8 and 1% of FMN, the fluorescence of the printed textiles persisted even after prolonged light irradiation; however, the fluorescence color shifted from greenish-yellow color to turquoise blue then to white, with the fluorescence quantum efficiency values (φ) increasing from 0.1 to a value as high as 1. Photodegradation products of the FMN with varying fluorescence wavelengths and intensities would explain the results. Thus, a color-changing light-emitting fluorescent textile was obtained after prolonged light irradiation of textile samples printed using biobased flavin. Furthermore, multifunctional properties such as antibacterial properties against E. coli were observed only for the printed cotton textile while increased ultraviolet protection was observed for both cotton and polyester printed fabrics for the high concentration of FMN water-based and glycerol-based formulations. The evaluation of fluorescence properties using digital printing techniques aimed to provide more sustainable solutions, both in terms of minimum use of biobased dye and obtaining the maximum yield.

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  • 44.
    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.

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  • 45.
    Iyer, Sweta
    et al.
    Högskolan i Borås, Akademin för textil, teknik och ekonomi. University of Borås.
    Behary, Nemeshwaree
    ENSAIT.
    Nierstrasz, Vincent
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Guan, Jinping
    Soochow university.
    Glow-in-the-Dark Patterned PET Nonwoven Using Air-Atmospheric Plasma Treatment and Vitamin B2-Derivative (FMN)2020Ingår i: Sensors, E-ISSN 1424-8220, Vol. 20, nr 23Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Flavin mononucleotide (FMN) derived from Vitamin B2, a bio-based fluorescent water-soluble molecule with visible yellow-green fluorescence, has been used in the scope of producing photoluminescent and glow-in-the-dark patterned polyester (PET) nonwoven panels. Since the FMN molecule cannot diffuse inside the PET fiber, screen printing, coating, and padding methods were used in an attempt to immobilize FMN molecules at the PET fiber surface of a nonwoven, using various biopolymers such as gelatin and sodium alginate as well as a water-based commercial polyacrylate. In parallel, air atmospheric plasma activation of PET nonwoven was carried for improved spreading and adhesion of FMN bearing biopolymer/polymer mixture. Effectively, the plasma treatment yielded a more hydrophilic PET nonwoven, reduction in wettability, and surface roughness of the plasma treated fiber with reduced water contact angle and increased capillary uptake were observed. The standard techniques of morphological properties were explored by a scanning electron microscope (SEM) and atomic force microscopy (AFM). Films combining each biopolymer and FMN were formed on PS (polystyrene) Petri-dishes. However, only the gelatin and polyacrylate allowed the yellow-green fluorescence of FMN molecule to be maintained on the film and PET fabric (seen under ultraviolet (UV) light). No yellow-green fluorescence of FMN was observed with sodium alginate. Thus, when the plasma-activated PET was coated with the gelatin mixture or polyacrylate bearing FMN, the intense photoluminescent yellow-green glowing polyester nonwoven panel was obtained in the presence of UV light (370 nm). Screen printing of FMN using a gelatin mixture was possible. The biopolymer exhibited appropriate viscosity and rheological behavior, thus creating a glow-in-the-dark pattern on the polyester nonwoven, with the possibility of one expression in daylight and another in darkness (in presence of UV light). A bio-based natural product such as FMN is potentially an interesting photoluminescent molecule with which textile surface pattern designers may create light-emitting textiles and interesting aesthetic expressions.

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  • 46.
    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

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  • 47.
    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.

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    Photoluminescent textile using biobased riboflavin derivative (FMN)
  • 48.
    Iyer, Sweta
    et al.
    Högskolan i Borås, Akademin för textil, teknik och ekonomi. University of Borås.
    Nierstrasz, Vincent
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Behary, Nemeshwaree
    ENSAIT.
    Guan, Jinping
    Soochow university.
    Chen, Guoqiang
    Soochow university.
    Study of photoluminescence property on cellulosic fabric using multifunctional biomaterials riboflavin and its derivative Flavin mononucleotide2019Ingår i: Scientific Reports, E-ISSN 2045-2322, nr 9, artikel-id 8696Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Flavins are ubiquitous in nature and participate in various biochemical reactions mainly in the form of coenzyme Flavin mononucleotide (FMN) or as precursor such as Riboflavin (RF). Both flavins, RF and FMN are multifunctional bio-based molecules yielding yellow coloration and exhibit photoluminescence, UV protection, and redox properties. The aim of the present research study was to investigate the diffusion method as a technique to obtain photoluminescent cellulosic fabric using multifunctional RF and FMN. The photoluminescent moiety RF and FMN exhibited three maximum absorbance peaks at about 270 nm, 370 nm and 446 nm in aqueous solution at pH 7. The solutions of RF and FMN with concentration 4% and 20% (owf) at pH 7 were prepared and used in diffusion method for cellulosic fabric dyeing. The study involved the determination of color performance and evaluation of luminescence property of the dyed fabric using UV-visible spectrophotometer and photoluminescence spectroscopy, respectively. Under monochromatic UV lamp exposure emitting at 370 nm, the dyed fabric showed an intense emission of greenish yellow color, which was later confirmed by the intense photoluminescence observed at a wavelength of about 570 nm. The study demonstrates the theoretical evaluation of quantum efficiency (φ) obtaining maximum φ value of 0.28. Higher color strength value and improved wash fastness were obtained by treatment with different biobased mordants such as tannic acid and citric acid as well as calcium chloride for both RF and FMN. Additionally, ultraviolet (UV) protection ability for both RF and FMN dyed fabric were determined and showed UPF factor of 50+ and 35 respectively. The work allowed us to explore the photoluminescence property of riboflavin and Flavin mononucleotide for its application in the field of textiles as a new scope of producing photoluminescent textile along with multifunctional properties such as coloration and UV protection.

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  • 49.
    Kahoush, May
    et al.
    Högskolan i Borås, Akademin för textil, teknik och ekonomi. ENSAIT.
    Behary, Nemeshwaree
    Université de Lille, Nord de France, France.
    Aurélie, Cayla
    Université de Lille, Nord de France, France.
    Brigitte, Mutel
    Université de Lille, Nord de France, France.
    Jinping, Guan
    College of Textile and Clothing Engineering, Soochow University, Suzhou, China.
    Nierstrasz, Vincent
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Surface modification of carbon felt by cold remote plasma for glucose oxidase enzyme immobilization2019Ingår i: Applied Surface Science, ISSN 0169-4332, E-ISSN 1873-5584, Vol. 467, s. 1016-1024Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Despite their chemical inertness and poor hydrophobicity, carbon-based materials are widely used in electrochemical applications due to their robustness, good electrical conductivity and corrosion resistance. The purpose of the work carried was to increase the wettability of nonwoven carbon fiber felts for improved efficiency in bio/electrochemical applications. Virgin Carbon Felt (VCF) was first treated with cold remote plasma (CRP) using a mixture of nitrogen and oxygen (1 or 2 %) as plasma gas.  Bio-functionalization of the carbon felts with glucose oxidase (GOx) enzyme was then carried using physical adsorption method. FTIR and XPS analysis showed an integration of new oxygenated functional groups (C-O and C=O) as well as amines and amides on the surface of VCF treated by the CRP treatment, which improved the wettability of the samples. Capillary uptake increased from around 0 % (for VCF) to nearly 750 % with 2 % oxygen in plasma gas. GOx enzyme showed higher activity after immobilization at pH 5.5 on the CRP treated samples, maintaining up to 50 % of its initial enzymatic activity after six cycles while with the VCF, no enzymatic activity was observed after the fourth cycle. These obtained felts can be used as electrodes in sustainable bioprocesses.

  • 50.
    Kahoush, May
    et al.
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Behary, Nemeshwaree
    ENSAIT .
    Cayla, Aurélie
    ENSAIT.
    Guan, Jinping
    Soochow University .
    Nierstrasz, Vincent
    Högskolan i Borås, Akademin för textil, teknik och ekonomi.
    Bio-Electro-Fenton for the Treatment of Textile Wastewater2018Ingår i: Proceedings of the 10th International Conference of Fiber and Polymer Biotechnology / [ed] Jürgen Andreaus, 2018, Vol. 1, s. 73-74, artikel-id OP 22Konferensbidrag (Refereegranskat)
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