Catalyst-free room-temperature self-healing polymer networks based on dynamic covalent quinone methide-secondary amine chemistry

被引：4

作者：

Zhang, Yuanxing ^{[1
,2
]}

Wu, Ying ^{[3
]}

Li, Jiayi ^{[1
,3
]}

Zhang, Ke ^{[1
,2
]}

机构：

[1] Chinese Acad Sci, Inst Chem, Lab Polymer Phys & Chem, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

[3] Beijing Normal Univ, Coll Chem, Inst Polymer Chem & Phys, Beijing 100875, Peoples R China

来源：

POLYMER CHEMISTRY | 2021年 / 12卷 / 42期

基金：

美国国家科学基金会;

关键词：

CROSS-LINKING; POLYURETHANE; EXCHANGE; BONDS;

D O I：

10.1039/d1py00957e

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

An aza-Michael addition between 2,6-di-t-butyl-7-phenyl-p-quinone methide and secondary amine was demonstrated to show a dynamic covalent reaction property under ambient conditions requiring no external stimuli. Based on this dynamic covalent chemistry, a novel dynamic covalent cross-linked polyurethane material was developed to achieve wonderful self-healing ability under ambient conditions without external stimuli. In addition, this cross-linked polyurethane behaved with excellent catalyst-free recyclability and reprocessability at a mild temperature of 60 degrees C.

引用

页码：6161 / 6166

页数：6

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