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2020-Polym Testing-Freezing-Tolerant and Robust Gelatin-Based Supramolecular Conductive Hydrogels with Double-Network Structure for Wearable Sensors
作者:Jia Yang, Xiangbin Sun, Qiong Kang, Lin Zhu, Gang Qin*, Qiang Chen*
關鍵字:Hydrogels
論文來源:期刊
具體來源:Polymer Testing
發表時間:2020年

Freezing-Tolerant and Robust Gelatin-Based Supramolecular Conductive Hydrogels with Double-Network Structure for Wearable Sensors

JiaYang, Xiangbin Sun, Qiong Kang, Lin Zhu, Gang Qin*, Qiang Chen*

https://doi.org/10.1016/j.polymertesting.2020.106879

Abstract:It is significant to design stretchable conductive hydrogels with high integrated mechanical and excellent anti-freezing performances for broadening their application fields. Herein, a freezing-tolerant and robust poly(N-hydroxymethyl acrylamide)/gelatin/glycerol supramolecular conductive hydrogel with double networks is synthesized via an one-pot method, where poly(N-hydroxymethyl acrylamide) can self-cross-link, and also interact with gelatin. Glycerol endows the conductive hydrogel with anti-freezing property in mechanics and electricity, and can also interact with poly(N-hydroxymethyl acrylamide) and gelatin to further enhance mechanical properties. Under optimal conditions, the conductive hydrogel exhibits high strength, super extensibility, rapid self-recovery, excellent fatigue resistance and high ionic conductivity. It possesses temperature insensitivity of mechanical properties and weak dependence of electrical behaviors on temperature. Furthermore, it exhibits excellent anti-freezing resistance response to strain, and can as sensor detect human activities. Thus, this work provides a simple and promising strategy for designing stretchable conductive gels with integrated high performances aiming for wearable intelligent electronics.

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