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选择低分子量端羟基聚二甲基硅氧烷(PDMS-OH)与聚(甲基丙烯酸甲酯-co-丙烯酸β-羟乙酯)P(MMA-co-HEA)共聚物原位复合形成氢键复合物,该复合物表现出良好的形状记忆效应.通过FTIR,SEM对材料的结构和形貌进行表征,DMA表征材料的动态力学行为,并通过弯曲实验对材料的形状记忆性能进行了表征及比较.FTIR分析证明PDMS-OH与P(MMA-co-HEA)共聚物形成氢键缔合作用;SEM分析显示,随着PDMS-OH含量的升高,氢键复合物由“海-岛”相分离结构向反转相分离结构转变;DMA分析结果表明,氢键的引入有利于复合物获得更高的模量比;形状记忆性能测试结果显示该氢键复合物具有良好的形状记忆性能,形状记忆固定率超过98%、形变恢复率超过99%,并且与聚(甲基丙烯酸甲酯-co-丙烯酸乙酯)/PDMS-OH(P(MMA-co-EA)/PDMS-OH)复合物相比,氢键复合物显示出更快的形变回复速率.
The low-molecular-weight hydroxy-terminated polydimethylsiloxane (PDMS-OH) and poly (methyl methacrylate-co-β-hydroxyethyl methacrylate) P (MMA-co-HEA) The complex exhibited good shape memory effect.The structure and morphology of the material were characterized by FTIR and SEM, and the dynamic mechanical behavior of the material was characterized by DMA. The shape memory property of the material was characterized by bending test And FTIR analysis showed that the PDMS-OH and P (MMA-co-HEA) copolymer formed hydrogen bonding interaction; SEM analysis showed that with the increase of PDMS-OH content, The results of DMA analysis show that the introduction of hydrogen bonds favors the higher modulus ratio of the composites. The results of shape memory properties show that the hydrogen bonding complexes have a good shape Memory performance, shape memory fixed rate of more than 98%, the deformation recovery rate of more than 99%, and with poly (methyl methacrylate-co-ethyl acrylate) / PDMS- OH) complexes, hydrogen bonding complexes show a faster rate of deformation recovery.