反应共混制备光触发形状记忆聚合物材料

doi:10.11944/j.issn.1000-0518.2019.08.190024

摘要/Abstract

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。

关键词: 交联聚烯烃, 形状记忆效应, 光热效应, 温度梯度

Abstract:

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.

Key words: crosslinked polyolefins, shape memory effect, photothermal effect, temperature gradient

纪凡策, 刘向东, 盛德鲲, 杨宇明. 反应共混制备光触发形状记忆聚合物材料[J]. 应用化学, 2019, 36(8): 904-908.

JI Fance, LIU Xiangdong, SHENG Dekun, YANG Yuming. Photothermal-Induced Shape Memory Polymers Prepared by Reactive Blending[J]. Chinese Journal of Applied Chemistry, 2019, 36(8): 904-908.

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