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Bashir, Tariq
Publications (10 of 39) Show all publications
Huniade, C., Mulder, R., Milad, A. M., Bashir, T. & Persson, N.-K. (2019). Disposable, green smart textiles based on conductive graphite fibres. In: : . Paper presented at 30th International Conference on Diamond and Carbon Materials Conference, Sevilla, September 8-12, 2019.
Open this publication in new window or tab >>Disposable, green smart textiles based on conductive graphite fibres
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2019 (English)Conference paper, Oral presentation with published abstract (Other academic)
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.

Keywords
graphite, smart textiles, fibre, sustainability
National Category
Textile, Rubber and Polymeric Materials
Research subject
Textiles and Fashion (General)
Identifiers
urn:nbn:se:hb:diva-21770 (URN)
Conference
30th International Conference on Diamond and Carbon Materials Conference, Sevilla, September 8-12, 2019
Available from: 2019-09-24 Created: 2019-09-24 Last updated: 2019-10-14Bibliographically approved
Milad, A. M., Bashir, T. & Persson, N.-K. (2019). The role and importance of surface modification of polyester fabrics by chitosan and hexadecylpyridinium chloride for the electrical and electro-thermal performance of graphene-modified smart textiles. New Journal of Chemistry, 17(43), 6643-6658, Article ID 10.1039/c8nj05445b.
Open this publication in new window or tab >>The role and importance of surface modification of polyester fabrics by chitosan and hexadecylpyridinium chloride for the electrical and electro-thermal performance of graphene-modified smart textiles
2019 (English)In: New Journal of Chemistry, ISSN 1144-0546, E-ISSN 1369-9261, Vol. 17, no 43, p. 6643-6658, article id 10.1039/c8nj05445bArticle in journal (Refereed) Published
Abstract [en]

Graphene has the potential to create highly valuable electrical conductive textile systems with maintained pliability and psychological comfort. There have already been numerous studies regarding electrically functionalized graphene-coated textiles. However, processing development is far from being exhausted. Here we have studied electro-thermal textiles based on the most common fibers, polyester, and an industry-relevant graphene impregnation method by introducing surface pre-modification of fabrics for graphene-modified textile processing. For this purpose, polyester fabrics were treated with four different cationic agents and impregnated with graphene oxide (GO) colloidal particles. Then, direct chemical reduction of GO to an electrically conductive graphene oxide (rGO) was performed. A pristine fabric modified by rGO showed a high resistance of 27.3 kΩ □−1 without any electro-thermal activity, whilst chitosan-treated (CS) and hexadecylpyridinium chloride-treated (HDPC) fabrics had resistance values of 2.7 and 0.59 kΩ □−1 respectively, and excellent heat propagation with a good temperature distribution. The steady-state temperature of CS-treated and HDPC-treated fabrics increased from 28 °C and 33 °C to 60 °C and 120 °C, respectively, as the voltage applied increased from 10 V to 30 V. These rGO-modified fabrics also have excellent electro-mechanical performance, and are good candidates for flexible strain sensor applications.

Keywords
GRAPHENE
National Category
Engineering and Technology
Research subject
Teacher Education and Education Work
Identifiers
urn:nbn:se:hb:diva-21009 (URN)10.1039/c8nj05445b (DOI)
Available from: 2019-05-08 Created: 2019-05-08 Last updated: 2019-10-14Bibliographically approved
Milad, A. M., Bashir, T. & Persson, N.-K. (2018). The role and optimization of cationic agents for adhesion and electrical conductivity of graphene-coated e-textiles. In: : . Paper presented at 11th International Symposium on Flexible Organic Electronics (ISFOE18), Thessaloniki, July 2-5, 2018.. Nanotexnology
Open this publication in new window or tab >>The role and optimization of cationic agents for adhesion and electrical conductivity of graphene-coated e-textiles
2018 (English)Conference paper, Oral presentation only (Other (popular science, discussion, etc.))
Abstract [en]

Textiles with electrical properties, known as e-textiles, are realized by different methods. Among these, graphene-coated textiles have attracted great attention due to its multifunctional properties such as being flexible lightweight; and offering interesting optical and electrical properties. While Aqueous dispersion of graphene oxide (GO) could be prepared and applied as a dye to textiles via a simple and cost-effectivene dip-coating method. Moreover, the GO could be reduced to graphene directly on the surface of the textiles. However, the GO flakes do not adhere properly to most textiles at any pH values probably because of electrostatic repulsion between the particles and the textile substrate as both the aqueous solution of GO and most textiles carry negative surface charges. Though, GO flakes could be easily assembled on a positively charged surface. Therefore, textiles need to be cationized before the dip-coating in the GO dispersion. In this work a number of both organic and inorganic cationic agents such as chitosan, Poly(diallyldimethylammonium chloride), Hexadecylpyridinium chloride, and Polyethylenimine are applied to the textiles before the coating process. Further on the so formed systems are characterized by scanning electron microscopy, FT-IR measurement, four-terminal sensing surface resistance measurement, diffusion reflection spectroscopy, electro-thermal analysis, and electro-mechanical analysis. The results display the fact that utilizing an appropriate cationic agent not only enhances the absorption of GO onto the textile surfaces but also play a critical role for the electrical conductivities and electro-thermal properties of the coated fabrics, with values varying between 12 to 0.6 kΩ.cm-1.

Place, publisher, year, edition, pages
Nanotexnology, 2018
National Category
Engineering and Technology
Identifiers
urn:nbn:se:hb:diva-21010 (URN)
Conference
11th International Symposium on Flexible Organic Electronics (ISFOE18), Thessaloniki, July 2-5, 2018.
Available from: 2019-05-08 Created: 2019-05-08 Last updated: 2019-10-14Bibliographically approved
Asadi, M., Bashir, T. & Skrifvars, M. (2017). Development of eco-friendly flame retardant polypropylene fibers. In: : . Paper presented at Fiber Society International Conference, Aachen Germany, May 17–19, 2017. Aachen, Germany
Open this publication in new window or tab >>Development of eco-friendly flame retardant polypropylene fibers
2017 (English)Conference paper, Poster (with or without abstract) (Refereed)
Place, publisher, year, edition, pages
Aachen, Germany: , 2017
Keywords
Polypropylene, eco-friendly, flame retardant, melt spinning
National Category
Textile, Rubber and Polymeric Materials
Research subject
Resource Recovery
Identifiers
urn:nbn:se:hb:diva-13430 (URN)
Conference
Fiber Society International Conference, Aachen Germany, May 17–19, 2017
Available from: 2018-01-13 Created: 2018-01-13 Last updated: 2018-01-15Bibliographically approved
Bashir, T., Skrifvars, M. & Persson, N.-K. (2017). High-strength electrically conductive fibers: functionalization of polyamide, aramid and polyester fibers with PEDOT polymer. Polymers for Advanced Technologies, 29(1), 310-318, Article ID 10.1002/pat.4116.
Open this publication in new window or tab >>High-strength electrically conductive fibers: functionalization of polyamide, aramid and polyester fibers with PEDOT polymer
2017 (English)In: Polymers for Advanced Technologies, ISSN 1042-7147, E-ISSN 1099-1581, Vol. 29, no 1, p. 310-318, article id 10.1002/pat.4116Article in journal (Refereed) Published
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.

Place, publisher, year, edition, pages
John Wiley & Sons, 2017
Keywords
Functional fibers, High performance fibers, PEDOT coating, VPP process
National Category
Textile, Rubber and Polymeric Materials
Research subject
Resource Recovery
Identifiers
urn:nbn:se:hb:diva-13429 (URN)10.1002/pat.4116 (DOI)000418367000031 ()2-s2.0-85026517387 (Scopus ID)
Available from: 2018-01-13 Created: 2018-01-13 Last updated: 2018-06-20Bibliographically approved
Bashir, T., Karlsson, F., Söderlöv, E. & Persson, N.-K. (2016). Cellulosic Smart Textile Fibers based on Organic Electronics. In: : . Paper presented at 6th Avancell Conference, Göteborg, 18-19 October, 2016.
Open this publication in new window or tab >>Cellulosic Smart Textile Fibers based on Organic Electronics
2016 (English)Conference paper, Poster (with or without abstract) (Refereed) [Artistic work]
Abstract [en]

The paradigm shift of merging structural properties of materials with other functionalities prevails and cellulose based fibres are no exception. For the realisation of so called smart materials, including smart textiles, electrical conductivity is of special importance, enabling sensorics, signal transmission, energy supply, energy generation, and actuation. We here discuss taking use of the advancement within the organic electronics community of conjugated polymeric systems producing smart textile fibres for inclusion into garment as well as interior and technical textiles. Specifically, poly(3,4-ethylenedioxythiophene) known as PEDOT is studied as a model system. PEDOT has relevance being a working horse within the organic electronics community. Our emerging pilot line is based on creating conductivity by vapour polymerization of EDOT monomers on an oxidant coated textile fibre where these could be taken from arrange of materials. Here we focus on cellulose based fibres. It is shown that Tencell-Lyocell is a suitable substrate offering many  anchoring sites and that multiple depositions with layers deposited directly on each other decreased the resistance from 5.1 (± 1.6) kΩ/10 cm to 1.0 (± 0.1) kΩ/10 cm, for one layer and multiple layers respectively. Furthermore, adding 15 wt. % of the copolymer PEG-PPG-PEG to the oxidant solution decreased the resistance from 6.8 (± 1.2) kΩ/10 cm to 3.9 (± 0.8) kΩ/10 cm.

Keywords
Cellulose, smart textiles, conductive fibers
National Category
Natural Sciences
Research subject
Resource Recovery
Identifiers
urn:nbn:se:hb:diva-11623 (URN)
Conference
6th Avancell Conference, Göteborg, 18-19 October, 2016
Available from: 2017-01-05 Created: 2017-01-05 Last updated: 2017-01-05Bibliographically approved
Guo, L., Bashir, T., Bresky, E. & Persson, N.-K. (2016). Electroconductive textiles and textile-based electromechanical sensors — integration in as an approach for smart textiles (1ed.). In: Vladan Koncar (Ed.), Smart Textiles and their Applications: (pp. 657-693). Woodhead Publishing Limited
Open this publication in new window or tab >>Electroconductive textiles and textile-based electromechanical sensors — integration in as an approach for smart textiles
2016 (English)In: Smart Textiles and their Applications / [ed] Vladan Koncar, Woodhead Publishing Limited, 2016, 1, p. 657-693Chapter in book (Refereed) [Artistic work]
Abstract [en]

The unification of textiles and electrics opens up many interesting possibilities for sensorics, actuation, energy transport, energy storage, and information transport. Electrics need conductive structures. Industrially knittable and weavable filaments and yarns are in this chapter overviewed in a typology of seven classes. These are the basics for the integration in approach that is put forward as a concept for successful production of smart textiles.Integration means that a "device" is (1) made by a textile production process and (2) made as a textile. We focus on smart textiles for mechanical sensoring that give an electrical output as these embrace such basic quantities as position, movement, speed, acceleration, elongation, forces, pressure, and vibration. Cases of mechanical sensors are demonstrated based on piezoelectricity and capacitive techniques. It is shown that these are promising technologies for smart textiles in general and the integration approach specifically.

Place, publisher, year, edition, pages
Woodhead Publishing Limited, 2016 Edition: 1
National Category
Engineering and Technology Natural Sciences
Research subject
Resource Recovery
Identifiers
urn:nbn:se:hb:diva-11692 (URN)978-0-08-100574-3 (ISBN)
Available from: 2017-01-09 Created: 2017-01-09 Last updated: 2017-01-09Bibliographically approved
Hatamvand, M., Mirjalili, S. A., Fattahi, S., Bashir, T. & Skrifvars, M. (2016). OPTIMUM DRAFTING CONDITIONS OF POLYESTER AND VISCOSE BLEND YARNS. AUTEX Research Journal
Open this publication in new window or tab >>OPTIMUM DRAFTING CONDITIONS OF POLYESTER AND VISCOSE BLEND YARNS
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2016 (English)In: AUTEX Research Journal, ISSN 1470-9589, E-ISSN 2300-0929Article in journal (Refereed) Accepted
Abstract [en]

In this study, we used an experimental design to investigate the influence of the total draft, break draft, distancebetween the aprons (Clips) and production roller pressure on yarn quality in order to obtain optimum draftingconditions 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, controllingand leading of the fibers is not sufficient for proper orientation of the fibers in the yarn structure to produce a highquality yarn. Experimental results and statistical analysis show that the best yarn quality will be obtained underdrafting conditions total draft of 38, 1.2 break draft, 2.8 mm distance between of aprons and maximum pressure ofthe production top roller.

Keywords
Ring spinning, yarn quality, break draft
National Category
Polymer Chemistry
Research subject
Resource Recovery
Identifiers
urn:nbn:se:hb:diva-11624 (URN)10.1515/aut-2016-0016 (DOI)000410991300003 ()2-s2.0-85029879551 (Scopus ID)
Available from: 2017-01-05 Created: 2017-01-05 Last updated: 2018-12-01Bibliographically approved
Persson, N.-K., Baghaei, B., Bashir, T., Brorström, B., Hedegård, L., Carlson Ingdahl, T., . . . Åkesson, D. (2016). Re: en ny samhällssektor spirar. Borås: Högskolan i Borås
Open this publication in new window or tab >>Re: en ny samhällssektor spirar
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2016 (Swedish)Report (Other academic)
Abstract [sv]

Resurser och hållbarhet är nära förknippade. Hållbarhet innebär att hushålla med resurser - materiella, miljömässiga och mänskliga. Och hushållning är per definition kärnan i ekonomi. Man börjar alltmer se framväxten av en hel arsenal av verktyg och förhållnings- och angreppssätt för att bygga hållbarhet. Detta förenas av ett synsätt att det som hitintills setts  om avfall och värdelöst, och rent utav besvärligt att ta hand om, nu blir en värdefull resurs. Det glömda och gömda kommer åter. Faktum är att många ord och begrepp kring detta börjar på just åter- eller re- . Internationellt talar man om Redesign, Recycling, Remake, Recycle, Recraft, Reuse, Recreate, Reclaim, Reduce, Repair, Refashion.

Vad är då allt detta? Ja, vill man dra det långt, är det inte mindre än framväxten av ett nyvunnet sätt att tänka, ja av en ny samhällssektor, en bransch och en industri,  sammanbundet av filosofin att återanvändningen, spillminskningen, vidarebruket, efterlivet anses som viktiga faktorer för ett miljömedvetet samhälle. Re: blir paraplytermen för detta. I denna antologi av forskare från skilda discipliner vid Högskolan i Borås lyfts ett antal av dessa begrepp inom Re: fram.

Place, publisher, year, edition, pages
Borås: Högskolan i Borås, 2016. p. 80
Series
Vetenskap för profession: rapport, ISSN 1654-6520 ; 37
National Category
Other Social Sciences
Identifiers
urn:nbn:se:hb:diva-10004 (URN)978-91-88269-22-5 (ISBN)978-91-88269-23-2 (ISBN)
Available from: 2016-06-09 Created: 2016-06-09 Last updated: 2018-08-20Bibliographically approved
Skrifvars, M., Bakare, F., Åkesson, D., Bashir, T., Ingman, P. & Srivastava, R. (2015). Synthesis and characterisation of unsaturated lactic acid based thermoset bio-resins. European Polymer Journal, 67(June 2015), 570-582
Open this publication in new window or tab >>Synthesis and characterisation of unsaturated lactic acid based thermoset bio-resins
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2015 (English)In: European Polymer Journal, ISSN 0014-3057, E-ISSN 1873-1945, Vol. 67, no June 2015, p. 570-582Article in journal (Refereed) Published
National Category
Polymer Technologies
Research subject
Resource Recovery
Identifiers
urn:nbn:se:hb:diva-3980 (URN)10.1016/j.eurpolymj.2014.11.045 (DOI)000357750900054 ()2-s2.0-84929071216 (Scopus ID)
Available from: 2015-12-11 Created: 2015-12-09 Last updated: 2018-12-01Bibliographically approved
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