Highly conductive and stretchable fiber interconnections using dry-spun carbon nanotube fibers modified with ionic liquid/poly(vinylidene fluoride) copolymer composite.
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| Title: | Highly conductive and stretchable fiber interconnections using dry-spun carbon nanotube fibers modified with ionic liquid/poly(vinylidene fluoride) copolymer composite. |
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| Authors: | Eom, Jimi1, Lee, Yu Ri2, Lee, Jun Ho3, Park, Sung Kyu3, Jeong, Youngjin4, Park, Jong S.1,2 jongpark@pusan.ac.kr, Kim, Yong-Hoon1,5 yhkim76@skku.edu |
| Source: | Composites Science & Technology. Jan2019, Vol. 169, p1-6. 6p. |
| Subjects: | Carbon nanotubes, Ionic liquids, Difluoroethylene, Stretching of materials, Fiber testing, Copolymers |
| Abstract: | Abstract In this paper, we demonstrate highly conductive and stretchable fiber interconnections for electronic textiles (e-textiles) using dry-spun carbon nanotube (CNT) fibers modified with ionic liquid (IL)/poly (vinylidene fluoride- co -hexafluoropropylene) (PVDF-HFP) copolymer composite. By adopting direct infiltration of CNT fibers with a mixture of 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide and PVDF-HFP, mechanical properties such as stretchability, maximum load and strain were significantly improved while minimizing the reduction in electrical conductivity. Such IL/PVDF modified CNT fibers (hybrid CNT fibers) exhibited electrical conductivity up to ∼1300 S/cm, with maximum load and strain values of 0.84 N and 35.7%, respectively. Using hybrid-CNT fibers, we demonstrated highly stretchable and electrically stable fiber interconnections for e-textiles by optimizing the interconnection pattern design. Particularly, by adopting a serpentine pattern, stretchability up to ∼70% and resistance variation of ∼2.7% at a tensile strain of 40% were achieved. [ABSTRACT FROM AUTHOR] |
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| Database: | Engineering Source |
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