Synthesis of cross-linked triple shape memory polyurethane with self-healing functionalities

被引：0

作者：

Zhang, Wenwen ^{[1
]}

Leng, Xuefei ^{[1
]}

Gao, Mengyun ^{[1
]}

Wei, Zhiyong ^{[1
]}

Wang, Yiying ^{[1
]}

Li, Yang ^{[1
]}

机构：

[1] State Key Laboratory of Fine Chemicals, Department of Polymer Materials, School of Chemical Engineering, Dalian University of Technology, Dalian,116024, China

来源：

Polymer Testing | 2021年 / 96卷

基金：

中国国家自然科学基金;

关键词：

Covalent bonds - Self-healing materials - Differential scanning calorimetry - Shape optimization - Shape-memory polymer - Sulfur compounds - Crosslinking - Polyethylene glycols - Medical applications;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

A series of shape memory polymers (SMPs) comprising poly (10-hydroxydecanoate) (PHDA) and polyethylene glycol (PEG) oligomer were facilely prepared. The effect of PEG content on the thermal dynamic properties of the cross-linking network were studied by differential scanning calorimetry (DSC) and dynamic mechanical analysis (DMA). The obtained polyurethane has two separated melting temperatures (Tm), which make the material a triple SMP. The shaped specimen only needs 8 s to get a 98.5% the shape recovery. Furthermore, disulfide bonds were introduced into the polyurethane to give the triple SMP self-healing ability. The synthetic polymer exhibited a self-healing efficiency of 78.3%. The healed samples could lift a weight of 100 g, which is 150 times of its own weight, without tearing. This polyurethane exhibits impressive triple-shape memory ability and a high potential for biomedical applications. © 2021 The Authors

引用

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