A Strong,Tough,and Self-Healing Strengthening Thioctic Acid-based Elastomer for Highly Reliable Flexible Strain Sensor  

作　　者：Xin-Yu Chen Yu-Bing Fu Xue-Ling Yan Lan Liu 

机构地区：[1]School of Materials Science and Engineering,Key Lab of Guangdong Province for High Property and Functional Polymer Materials,South China University of Technology,Guangzhou,510641,China

出　　处：《Chinese Journal of Polymer Science》2024年第10期1610-1618,I0016,共10页高分子科学（英文版）

基　　金：supported by the National Natural Science Foundation of China(No.52073099);the Guangdong Basic and Applied Basic Research Foundation(No.2024A1515010847);the Guangdong Project of R&D Plan in Key Areas(No.2020B010180001)。

摘　　要：Elastomers with high strength and toughness,excellent self-healing properties,and biocompatibility have broad application prospects in wearable electronics and other fields,but preparing it remains a challenge.In this work,we propose a highly adaptable strategy by introducing the small molecule crosslinking agent of triethanolamine(TEA)to the poly(thioctic acid)(PTA)chains and preparing the PAx Ey elastomers using a simple synthesis step.This strategy stabilizes the PTA chains by constructing multiple non-covalent cross-linked dynamic networks,endowing materials with excellent strength and toughness(tensile strength of 288 kPa,toughness of 278.2 kJ/m3),admirable self-healing properties(self-healing efficiency of 121.6%within 7 h at 70℃),and good biocompatibility.The PAx Ey elastomers can also be combined with MWNTs to become flexible strain sensors,which can be used to monitor human joint movements with high sensitivity,repeatable responses,and stability.

关 键 词：Thioctic acid Ion clusters Multiple dynamic networks Self-healing strengthening Flexible strain sensor 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置] TQ334[自动化与计算机技术—控制科学与工程]