Multistimuli Responsive and Thermoregulated Capability of Coaxial Electrospun Membranes with Core-sheath Structure and Functional Polypyrrole Layer

作     者：Meng-Hang Gao Wen Feng Xiao-Dong Qi Yong Wang Meng-Hang Gao;Wen Feng;Xiao-Dong Qi;Yong Wang

作者机构：Key Laboratory of Advanced Technologies of Materials(Ministry of Education)School of Materials Science&EngineeringSouthwest Jiaotong UniversityChengdu610031China 

出 版 物：《Chinese Journal of Polymer Science》 (高分子科学（英文版）)

年 卷 期：2022年第40卷第11期

页      面：1380-1388页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 

基　　金：financially supported by the National Natural Science Foundation of China(Nos.51803172 and 51673159) the Youth Science and Technology Innovation Team of Sichuan Province of Functional Polymer Composites(No.2021JDTD0009) the Key Research and Development Program of Sichuan Province(No.2022YFG0281)。 

主　　题：Phase change materials Polypyrrole Coaxial electrospinning Photothermal conversion Electrothermal conversion 

摘      要：Developing thermal management fabrics with good energy storage and multistimuli responsive properties is important for regulating the body temperature in complex environment.Herein,the intelligent nonwoven membranes were fabricated via a coaxial electrospinning method,resulting in a core-sheath structure with poly(ethylene glycol)(PEG)as core and polyurethane(PU)as sheath.Additionally,polypyrrole(PPy)with good light absorption ability and electrical conductivity was deposited onto the surface of the PU@PEG electrospun fibers via electrochemical polymerization.The PPy layer enabled the membranes to respond quickly to sunlight and electrical stimuli.The membranes could heat up to 86°C under simulated sunlight within 200 s or produce remarkable electrothermal effect under a low voltage input of only 1V,exhibiting efficient energy conversion and storage performances.The photothermal and electrothermal conversion effect could be easily adjusted by controlling the polymerization time of PPy.Therefore,the multifunctional membranes with high latent heat,good mechanical properties as well as excellent photothermal/electrothermal conversion ability are promising in personal thermal management applications.