文献类型：期刊文献

英文题名：Polyether-based main-chain-type polytriazole elastomer with benzoxazine via a 1,3-dipolar cycloaddition reaction

作者：Wan, Liqiang[1];Han, Dongjin[1];Liu, Qiang[1];Xu, Zhongyi[1];Huang, Farong[1]

机构：[1]E China Univ Sci & Technol, Sch Mat Sci & Engn, Minist Educ, Key Lab Specially Funct Polymer Mat & Related Tec, Shanghai 200237, Peoples R China

年份：2016

卷号：133

期号：1

外文期刊名：JOURNAL OF APPLIED POLYMER SCIENCE

收录：;EI(收录号：20154101354578);WOS:【SCI-EXPANDED(收录号:WOS:000362736300004)】；

基金：The authors gratefully acknowledge the financial support of the National Science Foundation of China (contract grant number 50703007), Shanghai Leading Academic Discipline Project (B502), and Fundamental Research Funds for the Central University.

语种：英文

外文关键词：addition polymerization; crosslinking; elastomers

摘要：A novel functional polyether-based elastomer with a benzoxazine structure in its main chain was successfully synthesized via a 1,3-dipolar cycloaddition reaction. Benefitting from a facile one-pot synthesis strategy, the elastomer was prepared at low temperature (80 degrees C) and was characterized clearly afterward. The azide-terminated polyether and acetylene-terminated benzoxazine were used as the soft and hard segments, respectively, in the polymer chain. Because the triazole rings served as stable linkage between the soft and hard segments, the elastomer possessed good thermal stability (the 5% weight loss temperature could exceed 350 degrees C) compared to traditional elastomers, such as polyurethane. The rigid benzoxazine rings provided the product with good mechanical properties (the tensile strength of the elastomer could exceed 30 MPa). Furthermore, the ring-opening polymerization of oxazine rings in the structure gifted the elastomer with possibility of thermally induced structural transformation. The thermally induced structural transformation could conveniently realize the conversion of the elastomer to a thermosetting resin. (c) 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 132, 42820.