Highly elastic and degradable vitrimeric elastomers using polycondensation  

作　　者：Yue Liu Yongshuang Huang Chao Li Guifu Si Min Chen 

机构地区：[1]Institutes of Physical Science and Information Technology,Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education,Anhui University,Hefei 230601,China [2]CAS Key Laboratory of Soft Matter Chemistry,Department of Polymer Science and Engineering,University of Science and Technology of China,Hefei 230026,China

出　　处：《Chinese Chemical Letters》2024年第3期434-438,共5页中国化学快报（英文版）

基　　金：supported by National Natural Science Foundation of China(NSFC,Nos.21971230,U19B6001,22201003);Excellent Research and Innovation Team Project of Anhui Province(No.2022AH010001);Anhui Province Key Laboratory of Environment-friendly Polymer Materials。

摘　　要：Introducing covalently crosslinked network to polymer matrix can merge the advantages in reprocessing and durability of polymers.In this contribution,a series of high-performance vitrimeric elastomers were achieved via polycondensation.The topological structures of polymers were tuned by varying the feeding ratios of bisacetoacetate,hex–substituted bisacetoacetate,bisamine and tris(2-aminoethyl)amine.With these structural manipulations,the vitrimeric elastomers presented great elastic recovery properties(strain recovery value up to 80%)benefiting from the introduction of long chain branch.Furthermore,the elastomers exhibited excellent reprocessing property,water vapor/oxygen barrier and adhesive properties.Specially,the elastomers could be degraded into monomer under acid conditions which enabled the elastomer synthesis again in closed loop recycling system.The ease of the polycondensation in this work to prepare highly elastic and recyclable vitrimeric elastomers demonstrated exciting opportunities for the synthesis of sustainable polymers.

关 键 词：POLYCONDENSATION Vitrimeric elastomers Highly elastic Degradable polymers 

分 类 号：TQ334[化学工程—橡胶工业]