反应共混制备光触发形状记忆聚合物材料  

Photothermal-Induced Shape Memory Polymers Prepared by Reactive Blending

作　　者：纪凡策 刘向东[1] 盛德鲲[1] 杨宇明[1] JI Fance;LIU Xiangdong;SHENG Dekun;YANG Yuming(Chinese Academy of Sciences Key Laboratory of High-Performance Synthetic Rubber and Its Composite Materials,Changchun Institute of Applied Chemistry,Chinese Academy of Sciences,Changchun 130022,China;University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]中国科学院长春应用化学研究所,中国科学院合成橡胶及其复合材料重点实验室,长春130022 [2]中国科学院大学,北京100049

出　　处：《应用化学》2019年第8期904-908,共5页Chinese Journal of Applied Chemistry

摘　　要：基于羧基和环氧基的高反应活性,以甲基丙烯酸缩水甘油醚与乙烯共聚物(PE-GMA),甲基丙烯酸与乙烯共聚物(EAA)为原料,采用熔融共混的方法制备了交联聚烯烃材料。采用差示扫描量热仪(DSC)和动态热机械分析仪(DMA)研究了其热力学性能及其形状记忆效应。结果表明,材料具备很宽的熔融温度范围(40~110℃)和很宽的晶体尺寸分布。利用材料晶体温度记忆的特性,成功地实现了材料的双重形状记忆效应,多重形状记忆效应和双向形状记忆效应。利用石墨烯材料的光热效应,研究了材料的光触发形状记忆效应。我们提出设计材料本体“温度梯度”的策略,实现了材料在无外力条件下的双向形状记忆效应。Based on the high reactivity of carboxyl and epoxy groups,crosslinked polyolefins were successfully prepared by reactive blending of ethylene-glycidyl methacrylate copolymer(PE-GMA)and ethylene acrylic acid copolymer(EAA).The thermodynamic properties and shape memory effect of the obtained polymer were measured by differential scanning calorimeter(DSC)and dynamic mechanical thermal analyses(DMA).The dual-shape memory effect,multi-shape memory effect and two-way shape memory effect were achieved due to the broad distribution of crystallite sizes of the crosslinked polyolefins.By the aid of photothermal effect of graphene oxide(GO),photothermal-induced shape memory effect was also realized.The“temperature gradient”strategy was successfully applied to the photothermal-induced two-way shape memory effect of the crosslinked polyolefins.

关 键 词：交联聚烯烃 形状记忆效应 光热效应 温度梯度 

分 类 号：O631[理学—高分子化学]