文献类型：期刊文献

英文题名：Self-healing polyurethane based on ditelluride bonds

作者：Liu, Jia[1];Ma, Xiaoning[1];Tong, Yanping[1];Lang, Meidong[1]

机构：[1]East China Univ Sci & Technol, Shanghai Key Lab Adv Polymer Mat, Key Lab Ultrafine Mat, Minist Educ,Sch Mat Sci & Engn, Shanghai 200237, Peoples R China

年份：2018

卷号：455

起止页码：318

外文期刊名：APPLIED SURFACE SCIENCE

收录：;EI(收录号：20182305277235);WOS:【SCI-EXPANDED(收录号:WOS:000438578700038)】；

基金：This research was supported by the National Key Research and Development Program (2016YFC1100703).

语种：英文

外文关键词：Ditelluride bonds; Dynamic exchange; Self-healing; Polyurethane

摘要：Ditelluride bonds have been reported as dynamic covalent bonds which could undergo reversible formation and cleavage at room-temperature. In this work, a novel self-healing ditelluride-containing polyurethane was synthesized by incorporating ditelluride bond into its main chain. Base on the dynamic nature of ditelluride bonds, this polyurethane could self-heal in darkness at room temperature without external intervention. The study on the exchange mechanism revealed that the reversible exchange of ditelluride bonds and the intermolecular hydrogen bonding were the two main factors that responsible for the self-healing behavior of this polyurethane. The ditelluride content and chain mobility of the polymer have a significant effect on its self-healing property. The unique non-intervention self-healing properties and wild applicability makes this polymers ideal for environment friendly smart systems.