可降解形状记忆聚氨酯的研究进展

Progress in Biodegradable Shape-Memory Polyurethane

聚氨酯是一种具有微相分离本体结构的多嵌段共聚物,可通过调节原料的组成和配比,得到性能各异的新型功能高分子材料。由硬段和软段组成的聚氨酯表现出很好的形状记忆性。本文综述了形状记忆聚合物及其基本原理,概述了可降解形状记忆聚氨酯的可降解性和形状记忆性,着重介绍了可降解形状记忆聚氨酯的最新研究进展。

Segmented polyurethanes containing amorphous or crystalline soft segments as reversible phase and crosslink points as fixed phase can exhibit shape-memory properties. Shape-memory polymer and the theory of shape-memory were reviewed in this paper. Furthermore, the biode were summarized with the emphasis on new progress in biodegradable gradability and shape-memory properties shape-memory polyurethane.