Studies on Moisture-Sensitive Shape Memory Behavior of IPDI –BINA Based Polyurethane

Shape memory polyurethane is attractive in recent years because of its wide applications in many fields. In order to study the moisture-sensitive shape memory effect of pyridine containing shape memory polyurethane, in this work, moisture absorption and moisture-sensitive shape memory behavior of pyridine containing SMPU synthesized from BINA and IPDI are investigated systematically. The results show that IPDI-BINA SMPU shows moisture absorption and the moisture absorption affects significantly the thermal and DMA properties. Finally, shape recovery process under moisture condition demonstrates that IPDI-BINA SMPU show moisture-sensitive shape memory effect that it can recover the origin shape under the moistures condition.