文献类型：期刊文献

英文题名：Benzoxazine/epoxy copolymer vitrimers containing imine bonds: Self-healing, reprocessing, and degradation properties

作者：Wang, Jing[1];Lu, Xin[1];Xin, Zhong[1]

机构：[1]East China Univ Sci & Technol, Sch Chem Engn, Shanghai Key Lab Multiphase Mat Chem Engn, Shanghai 200237, Peoples R China

年份：2026

卷号：354

外文期刊名：POLYMER

收录：;EI(收录号：20261420451635);WOS:【SCI-EXPANDED(收录号:WOS:001740628700001)】；

基金：This work was financially supported by the National Natural Science Foundation of China (22378123) .

语种：英文

外文关键词：Benzoxazine; Epoxy; Reprocessing; Self-healing; Vitrimer

摘要：Benzoxazine/epoxy copolymer vitrimers with self-healing, reprocessing, and degradation properties were fabricated by introducing imine bonds. An imine-containing benzoxazine monomer (V-a) was synthesized via the Schiff-base reaction between vanillin/stearylamine-based benzoxazine (VSA) and 1,3-bis(3-aminopropyl)1,1,3,3-tetramethyldisiloxane (APTMDS). A series of benzoxazine/epoxy copolymer (PVE) vitrimers were prepared via copolymerization of V-a and epoxy resin at different mass ratios. The dynamic imine bonds and flexible siloxane segments endow the PVE vitrimers with favorable shape memory, self-healing, and reprocessing capabilities. The tensile strength of the PVE vitrimer after three reprocessing cycles reaches 18.1 MPa. In addition, the PVE vitrimers possess excellent thermal stability (T5% >= 300 degrees C), good degradability, and superior hydrophobicity. This work provides a feasible design strategy for the development of high-performance benzoxazine/ epoxy copolymer vitrimers.