PVA/SA/MXene dual‐network conductive hydrogel for wearable sensor to monitor human motions. Issue 7 (6th September 2021)

• Record Type: Journal Article
• Authors: Wang, Tingting; Wang, Jinqing; Li, Zhangpeng; Yue, Mingqiang; Qing, Xiaoli; Zhang, Pengxia; Liao, Xiaozhu; Fan, Zengjie; Yang, Shengrong
• Is Part Of: Journal of applied polymer science. Volume 139:Issue 7(2022)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2021-09-06
• Subjects: conductive hydrogel -- dual‐network -- PVA/SA/ MXene -- wearable sensor -- human motions; Polymers -- Periodicals; Polymerization -- Periodicals; 668.9
• DOI: 10.1002/app.51627
• Languages: English
• ISSNs: 0021-8995

Abstract

Abstract: Conductive hydrogels with high flexibility, superior formability, good mechanical elasticity, and excellent biocompatibility have emerged as promising materials for broad applications in flexible/wearable electronic devices. In this work, a conductive dual‐network PVA/SA/MXene hydrogel (PSM‐h) composed of polyvinyl alcohol, sodium alginate, and MXene (Ti3 C2 Tx ) is constructed by a green method without using chemical crosslinking agents. The resultant hydrogel with dual‐network feature shows excellent cytocompatibility (no toxicity for human umbilical cord mesenchymal stem cells), high stretchability (up to 263%), and superior anti‐fatigue ability (stretched up to 1000 cycles). More importantly, PSM‐h based strain sensor presents good sensing sensitivity with a fast response time (62.5 ms) and a low detection limit even under a very slight strain of 0.2%. In terms of the practical application, the PSM‐h based strain sensor can be applied to detect and distinguish various human motions. Abstract : A conductive dual‐network PVA/SA/MXene hydrogel (PSM‐h) composed of polyvinyl alcohol (PVA), sodium alginate (SA), and MXene (Ti3 C2 Tx ) is constructed by a green method without using chemical crosslinking agents, which possesses excellent cytocompatibility, high stretchability, and superior anti‐fatigue ability. Moreover, PSM‐h based strain sensor presents good sensing sensitivity with a fast response time and a low detection limit, which can find practical applications in detecting and distinguishing various human motions.