| 反应共混制备光触发形状记忆聚合物材料 |
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| 引用本文： | 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. |
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| 作者姓名： | 纪凡策 刘向东 盛德鲲 杨宇明 |
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| 作者单位： | 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
;中国科学院大学 北京 100049 |
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| 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。
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| 关 键 词： | 交联聚烯烃 形状记忆效应 光热效应 温度梯度 |
| 收稿时间： | 2019-01-25 |
Photothermal-Induced Shape Memory Polymers Prepared by Reactive Blending |
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| 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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| Authors: | JI Fance LIU Xiangdong SHENG Dekun YANG Yuming |
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| Institution: | 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 |
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| 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. |
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| Keywords: | crosslinked polyolefins shape memory effect photothermal effect temperature gradient |
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