文献类型：期刊文献

英文题名：Effect of the Crosslinking Degree on Self-Healing Poly(1,2,3-Triazolium) Adhesive

作者：Zhang, Jun[1];Shang, Chengyuan[2];Yu, Zhuoer[1];Wang, Linxiao[1];Tang, Junkun[1];Huang, Farong[1]

机构：[1]East China Univ Sci & Technol, Key Lab Specially Funct Polymer Mat & Related Tec, Minist Educ, Sch Mat Sci & Engn, Shanghai 200237, Peoples R China;[2]Aerosp Res Inst Mat & Proc Technol, Res & Applicat Ctr Struct Composites, Beijing 100076, Peoples R China

年份：2022

卷号：43

期号：1

外文期刊名：MACROMOLECULAR RAPID COMMUNICATIONS

收录：;EI(收录号：20214511135841);WOS:【SCI-EXPANDED(收录号:WOS:000716196500001)】；

基金：This work is supported by the National Natural Science Foundation of China (Grant No. 21805088), and the Fundamental Research Funds for the Central Universities (Grant Nos. 50321042017001, 222201814003, 50321041918013).

语种：英文

外文关键词：adhesives; covalent adaptable networks; crosslinking degree; poly(1; 2; 3-triazolium); self-healing

摘要：Dynamic covalent materials are a class of polymer that could be stress-relaxation, reprocessable, and self-healing due to dynamic crosslinks in network. Dynamic crosslinks play an important role in the typical characteristic of self-healing polymers. It is meaningful to understand the effect of crosslinking degree on the properties of poly(1,2,3-triazolium) (PTAM). In this article, the dynamic covalent network of PTAM adhesive has been used to study the effect of crosslinking degree. A series of PTAM adhesive with different crosslinking degrees have been obtained by changing the amount of crosslinker. Adhesion property can first rise then fall down with the increase of crosslinking degree and the best lap-shear strength is above 20 MPa. Creep resistance and solvent resistance can be enhanced with the increase of crosslinking degree. Self-healing studies have shown that crosslinking degree can enhance the ability of self-healing, but too high crosslinking degree raises the temperature of self-healing and causes side reaction which reduces the self-healing efficiency. These results provide some insights for the influence of the crosslinking degree on the self-healing and the structural design of dynamic covalent materials.