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Highly conductive and stretchable fiber interconnections using dry-spun carbon nanotube fibers modified with ionic liquid/poly(vinylidene fluoride) copolymer composite
Composites Science and Technology ( IF 9.1 ) Pub Date : 2019-01-01 , DOI: 10.1016/j.compscitech.2018.10.035
Jimi Eom , Yu Ri Lee , Jun Ho Lee , Sung Kyu Park , Youngjin Jeong , Jong S. Park , Yong-Hoon Kim

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.

中文翻译:

使用离子液体/聚偏二氟乙烯共聚物复合材料改性干纺碳纳米管纤维的高导电性和可拉伸纤维互连

摘要 在本文中,我们使用离子液体 (IL)/聚偏二氟乙烯-共六氟丙烯 (PVDF) 改性干纺碳纳米管 (CNT) 纤维,展示了用于电子纺织品 (e-textiles) 的高导电性和可拉伸纤维互连。 -HFP) 共聚物复合材料。通过采用 1-丁基-3-甲基咪唑鎓双(三氟甲基磺酰基)酰亚胺和 PVDF-HFP 的混合物直接渗透 CNT 纤维,显着提高了拉伸性、最大载荷和应变等机械性能,同时最大限度地减少了导电性的降低。这种 IL/PVDF 改性的 CNT 纤维(混合 CNT 纤维)表现出高达 1300 S/cm 的电导率,最大载荷和应变值分别为 0.84 N 和 35.7%。使用混合碳纳米管纤维,我们通过优化互连图案设计,展示了用于电子纺织品的高度可拉伸和电稳定的纤维互连。特别是,通过采用蛇形图案,在 40% 的拉伸应变下实现了高达 70% 的拉伸性和 2.7% 的电阻变化。
更新日期:2019-01-01
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