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Highly Conductive Fiber with Waterproof and Self-Cleaning Properties for Textile Electronics. | LitMetric

Highly Conductive Fiber with Waterproof and Self-Cleaning Properties for Textile Electronics.

ACS Appl Mater Interfaces

Nanobio Device Laboratory, School of Electrical and Electronic Engineering , Yonsei University, 50 Yonsei-ro , Seodaemun-Gu, Seoul 03722 , Republic of Korea.

Published: October 2018

AI Article Synopsis

  • Major challenges in making wearable textile electronics include protecting them from moisture and contamination, which can damage their functionality.
  • Researchers created a waterproof and highly conductive fiber by coating Kevlar with silver nanoparticles and a special polymer, enhancing its electrical and mechanical stability.
  • The best results for waterproofing and self-cleaning properties were achieved using a specific chemical treatment (PFDT), making this fiber ideal for advanced uses in wet conditions and improving its longevity through repeated stress tests.

Article Abstract

Major concerns in the development of wearable textile electronics are exposure to moisture and contamination. The exposure can cause electrical breakdown of the device and its interconnections, and thus continuous efforts have been made to fabricate textile electronics which are free from moisture and pollution. Herein, we developed a highly conductive and waterproof fiber with excellent electrical conductivity (0.11 Ω/cm) and mechanical stability for advanced interconnector components in wearable textile electronics. The fabrication process of the highly conductive fiber involves coating of a commercial Kevlar fiber with Ag nanoparticle-poly(styrene- block-butadiene- block-styrene) polymer composites. The fabricated fiber then gets treated with self-assembled monolayer (SAM)-forming reagents, which yields waterproof and self-cleaning properties. To find optimal SAM-forming reagents, four different kinds of reagents involving 1-decane thiol (DT), 1 H,1 H,2 H,2 H-perfluorohexanethiol, 1 H,1 H,2 H,2 H-perfluorodecyltrichlorosilane, 1 H,1 H,2 H,2 H-perfluodecanethiol (PFDT) were compared in terms of their thiol group and carbon chain lengths. Among the SAM-forming reagents, the PFDT-treated conductive fiber showed superior waterproof and self-cleaning property, as well as great sustainability in the water with varying pH because of nanoscale roughness and low surface energy. In addition, the functionality of the conductive fiber was tested under mechanical compression via repeated washing and folding processes. The developed conductive fiber with waterproof and self-cleaning property has promising applications in the interconnector operated under water and textile electronics.

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Source
http://dx.doi.org/10.1021/acsami.8b10217DOI Listing

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