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通过集成的物理化学网络工程实现的拉伸激活变形

Zhao Xu¹, Zi-Yang Fan¹, Dun-Wen Wei²

¹College of Polymer Science and Engineering, Sichuan University, State Key Laboratory of Advanced Polymer Materials, Chengdu, 610065, Sichuan, China. rybao@scu.edu.cn.

Materials horizons

|September 10, 2025

概括

研究人员使用弹性塑料双层开发了拉伸激活形状变形材料. 这一突破使可定制,可重复的转换在软变形设备中实现,模仿自然现象.

科学领域:

材料科学与工程材料科学与工程
聚合物化学聚合物化学
软机器人软机器人软机器人软机器人

背景情况:

自然系统表现出显著的机械刺激响应形状转变 (例如, Mimoza 叶).
在合成材料中复制这些易于调节的形状变形能力仍然是一个重大的制造挑战.
现有的合成变形材料往往缺乏高效,可重复的激活机制.

研究的目的:

展示一种创新方法,用于创建拉伸激活形状变形合成材料.
设计一种弹性-塑料双层结构,能够控制变形和恢复.
探索这些材料在软变形设备应用中的潜力.

主要方法:

使用动态二氧化甲解环交联,制造弹性多聚烯弹性体 (POEV) 和塑料POE/ (POE/PW-V) 混合物.
通过界面特定的二氧化碳甲基合成,组装一个弹性-塑料不匹配的双层.
在拉伸应力和热回收下形状转换行为的表征.

主要成果:

弹性塑料双层在拉伸和释放时由于差异恢复而表现出显著的曲变形.
局部化双层设计使区域特定的形状转换和可定制的变形几何学成为可能.
抛水晶的热诱导融促进了自发的形状恢复,确保可重复的拉伸激活.

结论:

通过整合物理和化学网络工程的设计策略,成功创建了异质响应的变形材料.
开发的弹性-塑料双层系统为拉伸激活形状变形提供了一个简单且可重复的方法.
这些材料对先进的软变形设备应用具有重大前景.

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