Mechanically and Conductively Robust Eutectogel Fiber Produced by Continuous Wet Spinning Enables Epidermal and Implantable Electrophysiological Monitoring  

作　　者：Shufeng Hu Jingya Song Qiong Tian Chen Zeng Yuchen Jiang Qihua Li Jun Xu Wei Yan Jun Li Zhiyuan Liu Weiqing Kong Meifang Zhu 

机构地区：[1]State Key Laboratory of Pulp and Paper Engineering,Plant Fiber Materials Science Research Center,South China University of Technology,Guangzhou 510006,China [2]State Key Laboratory for Modification of Chemical Fibers&Polymer Materials,College of Materials Science and Engineering,Donghua University,Shanghai 201620,China [3]Guangdong-Hong Kong-Macao Joint Laboratory of Human-Machine Intelligent-Systems,Shenzhen Institute of Advanced Technology,Chinese Academy of Sciences,Shenzhen 518055,China [4]Standard Robots Co.,Ltd,Room 405,Building D,Huafeng International Robot Fusen Industrial Park,Hangcheng Avenue,Guxing Community,Xixiang Street,Baoan District,Shenzhen 518000,China [5]Research Center for Neural Engineering,Shenzhen Institute of Advanced Technology,Chinese Academy of Sciences,Shenzhen 518055,China

出　　处：《Advanced Fiber Materials》2024年第6期1980-1991,共12页先进纤维材料（英文）

基　　金：the support of the National Key R&D Program of China(2023YFB3809902);National Natural Science Foundation of China(22108031);Shanghai Sailing Program(21YF1400800);the support of the Key Lab for Modification of Chemical Fibers&Polymer Materials,its Analysis Center and Lab.

摘　　要：In recent years,the collection and monitoring of human physiological signals have garnered increasing attention due to their wide-ranging applications in healthcare,human-machine interaction,sports,and other fields.However,the continuous fabrication of flexible gel fiber electrodes with high mechanical performance,high conductivity,and durability for extreme environments using a simple,efficient,and universal strategy remains challenging for physiological signal acquisition.Here,we have employed a strategy of solvent replacement and multi-level hydrogen bond enhancement to construct eutectogel fibers with continuous solid-liquid structure,achieving continuous production of fibers with high strength,high conductivity,and low-temperature resistance.In the fiber,PVA serves as the solid-state elastic phase,DES as the liquid ionic conductive phase,and CNF as the reinforcement phase.The resulting eutectogel fibers exhibit excellent tensile strength(37.3 MPa),good elongation(>700%),high electrical conductivity(0.543 S/m),and resistance to extreme dry and-60°C low-tem-perature environments.Furthermore,these eutectogel fibers demonstrate high sensitivity for monitoring joint movements and effectively detecting in vitro and in vivo signals,show casing their potential for wearable strain sensors and monitoring physiological signals.

关 键 词：Eutectogel fibers Wet spinning Hydrogen-bond networks SENSING 

分 类 号：TQ427.26[化学工程]