A novel adamantane-based polyurethane with shape memory effect

作者：Fu, Shuqin; Zhu, Jiaping; Zou, Faxing; Zeng, Xierong^*; Chen, Shaojun^*

来源：Materials Letters, 2018, 229: 44-47.

DOI：10.1016/j.matlet.2018.06.115

• Polyurethanes
• Shape memory materials
• Crystalline phase
• Thermal properties

A novel adamantane-based polyurethane (AdPU) was synthesized via efficient ring-opening polymerization of 1,3,5,7-tetrahydroxyadamantane with epsilon-caprolactone followed by one-step polymerization of poly(epsilon-caprolactone) (PCL2000) with 1,6-hexamethylene diisocyanate (HDI). The incorporation of 1,3,5,7-tetrahydroxyadamantane enhanced the thermal stability of AdPU. It was found that AdPU was composed of a crystalline soft phase and an amorphous hard phase; and the aggregation of segments could form nano-sized crystal fibers by controlling the drying conditions. Finally, shape memory effect tests showed that AdPU has thermal-induced shape memory effect with good shape fixation and 85% shape recovery. This work opens a new avenue to design polyurethane frameworks with cubic geometry structure for shape memory applications.

• 出版日期2018-10-15
• 单位深圳大学