文献类型：期刊文献

英文题名：A polyacrylamide/gelatin/tannic acid-modified carbon nanotube double network hydrogel with skin temperature-triggered adhesion and high sensitivity for wearable sensors

作者：Liu, Wenxiu[1];Wang, Kun[1];Zhao, Zixuan[1];Yan, Jiani[1];Zhang, Chenyan[1];Ma, Shuolei[1];Wang, Jianxiong[1];Guo, Weihong[1];Wang, Jikui[1]

机构：[1]East China Univ Sci & Technol, Sch Mat Sci & Engn, Shanghai 200030, Peoples R China

年份：2024

卷号：12

期号：36

起止页码：14330

外文期刊名：JOURNAL OF MATERIALS CHEMISTRY C

收录：;EI(收录号：20243416904930);WOS:【SCI-EXPANDED(收录号:WOS:001290366400001)】；

基金：The authors are very grateful for the help provided by the staff of the College's Analytical Testing Center.

语种：英文

外文关键词：Elastomers - Physiological models

摘要：Flexible wearable devices based on conductive hydrogels have received widespread attention. However, the poor mechanical properties, weak adhesion and low sensitivity of traditional hydrogels greatly limit their practical applications. In this study, a polyacrylamide/gelatin/tannic acid-modified carbon nanotube (PAM/gelatin/TA-CNT) double network conductive hydrogel with skin temperature-triggered adhesion and low-temperature-triggered detachment was constructed via a simple one-pot method using polyacrylamide (PAM) and gelatin as the main components, and tannic acid (TA)-modified carbon nanotubes (CNTs) as the conductive filler. The resulting hydrogel has various functions such as excellent mechanical properties, high sensitivity (GF value was 5.50), wide strain detection range and excellent fatigue resistance. Flexible strain sensors based on this hydrogel can provide real-time and stable monitoring of human physiological activities over a wide strain range. In addition, its assembly into a pressure sensor can also realize information encryption and transmission. A PAM/gelatin/TA-CNT hydrogel with skin temperature-triggered adhesion and excellent sensing properties.