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。
2.
The microphase seperation of s - sbs was also studied by transmission electron microscope . the difference of microphase seperation of sbs and s - sbs was compared by the way of staining the c = c by oso4 通过用050 ;对双键染色，比较了sbs与s - sbs在磺化前后聚苯乙烯相和聚丁二烯相的微相分离结构的差异，说明磺化改变了sbs的微观结构。
