材料科学
自愈
耐久性
胶粘剂
聚合物
韧性
自愈水凝胶
灵活性(工程)
计算机科学
纳米技术
复合材料
高分子化学
图层(电子)
医学
替代医学
病理
数学
统计
作者
Hao Zhang,Dongzhi Zhang,Huixin Luan,Zihu Wang,Pengfei Zhang,Guangshuai Xi,Xinyi Ji
出处
期刊:Langmuir
[American Chemical Society]
日期:2023-10-31
卷期号:39 (45): 16199-16207
标识
DOI:10.1021/acs.langmuir.3c02666
摘要
The conductive hydrogel as a flexible sensor not only has certain mechanical flexibility but also can be used in the field of human health detection and human-computer interaction. Herein, by introduction of tannic acid (TA) with MXene into the polyacrylamide (PAM)/carboxymethyl chitosan (CMC) double-network hydrogel, a hydrogel with high stretchability, self-adhesion, and high sensitivity was prepared. CMC and PAM form a semi-interpenetrating double-network of high toughness and durability through electrostatic interactions and multiple hydrogen bonding networks. The abundant hydrophilic functional groups on TA and MXene form multiple hydrogen bonds simultaneously with the polymer network, ensuring high stretchability and sensitivity of the hydrogel. The hydrogel can display an accurate response to a variety of stimulus signals and can monitor both human joint movements and small physiological signal changes. It can also be combined with deep learning algorithms to classify handwritten digits with an accuracy rate of 98%. This work can promote the application of hydrogel sensors with durability and high sensitivity. The combination of algorithms and flexible sensors provides important ideas for the further development of flexible devices.
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