Segmented polyurethanes containing amorphous or crystalline soft segments as reversible phase and crosslink points as fixed phase can exhibit shape - memory properties 摘要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。
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It was found that the high , ystallinity of the soft segment regions and the formation of hard segment domains are the necessary conditions for polyurethane with good shape memory behavior . secondly , shape memory polyurethane ionomer was synthesized 并从结构与性能的关系入手，深入探讨了形状记忆聚氨酯的结构对其形状记忆性能的影响，发现软段高度结晶和硬段聚集形成硬段微区是聚氨酯具有较好形状记忆性能的必要条件。
