Stretchable and Highly Sensitive Braided Composite Yarn@Polydopamine@Polypyrrole for Wearable Applications

Pan, J, Yang, M, Luo, L, Xu, A, Tang, B, Cheng, D, Cai, G and Wang, X 2019, 'Stretchable and Highly Sensitive Braided Composite Yarn@Polydopamine@Polypyrrole for Wearable Applications', ACS Applied Materials & Interfaces, vol. 11, pp. 7338-7348.


Document type: Journal Article
Collection: Journal Articles

Title Stretchable and Highly Sensitive Braided Composite Yarn@Polydopamine@Polypyrrole for Wearable Applications
Author(s) Pan, J
Yang, M
Luo, L
Xu, A
Tang, B
Cheng, D
Cai, G
Wang, X
Year 2019
Journal name ACS Applied Materials & Interfaces
Volume number 11
Start page 7338
End page 7348
Total pages 11
Publisher American Chemical Society
Abstract Flexible wearable devices for various applications have attracted research attention in recent years. To date, it is still a big challenge to fabricate strain sensors with a large workable strain range while maintaining their high sensitivity. Herein, we report the fabrication of highly sensitive wearable strain sensors from braided composite yarns (BYs) by in situ polymerization of polypyrrole (PPy) on the surface of yarns after polydopamine templating (BYs-PDA). The electromechanical performance and strain sensing properties of the fabricated braided composite yarn@polydopamine@polypyrrole (BYs-PDA-PPy) were investigated. Because of the unique braided structure of BYs, the BYs-PDA-PPy strain sensors exhibit fascinating performance, including a large workable strain range (up to 105% strain), high sensitivity (gauge factor of 51.2 in strain of 0%-40% and of 27.6 in strain of 40%-105%), long-term stability and great electrical heating performance. Furthermore, the BYs-PDA-PPy sensors can be used in real-time monitoring subtle and large human motions. The BYs-PDA-PPy strain sensors can also be woven into fabrics for large area electric heating. These results demonstrate the potential of BYs-PDA-PPy in wearable electronics.
Subject Textile Technology
Functional Materials
Keyword(s) braided composite yarns
polydopamine
PPy
strain sensor
electromechanical performance
DOI - identifier 10.1021/acsami.8b18823
Copyright notice © 2019 American Chemical Society
ISSN 1944-8252
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