Polyacrylamide/Chitosan-Based Conductive Double Network Hydrogels with Outstanding Electrical and Mechanical Performance at Low Temperatures

• DOI: 10.1021/acsami.1c08421
• Publication Date: 2021-07-16T18:29:15Z
• Authors: Jing Cong; Zhiwei Fan; Shaoshan Pan; Jie Tian; Weizhen Lian; Shan Li; Sijie Wang; Dongchang Zheng; Chunguang Miao; Weiping Ding; Taolin Sun; Tianzhi Luo
• Keywords: Polyacrylamide

Hydrogel-based electronics have received growing attention because of their great flexibility and stretchability. However, the fabrication conductive hydrogels with high stretchability, excellent toughness, outstanding sensitivity, low-temperature stability still remains a challenge. In this study, type consisting double network (DN) structure is synthesized. The dynamically cross-linked chitosan (CS) flexible polyacrylamide doped polyaniline constitute DN through hydrogen bonds between hydroxyl, amide, aniline groups. This displays mechanical performance, striking conductivity, remarkable freezing tolerance. electronic sensors based on double-network demonstrate superior strain sensitivity linear response various deformations. Additionally, good antifreezing property allows to exhibit performance at −20 °C.