自生长的聚合物材料的受控宏观形状演变
Xinhong Xiong1,2, Xiaozhuang Zhou1,2, Haohui Zhang3
1Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu, Sichuan, China.
Nature communications
|March 3, 2025
概括
研究人员开发了一种新方法,使合成材料能够生长和改变形状,模仿生物. 这种受控聚合技术允许材料从平面方形转变为球体和其他复杂的形式.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物化学 聚合物化学
- 软物质物理学 软物质物理学
背景情况:
- 生物通过吸收营养和整合质量来生长,使其能够适应形状的变化.
- 现有的合成动态聚合物在生长过程中往往缺乏可控的全球几何变化.
- 在合成材料中模仿生物生长仍然是一个重大挑战.
研究的目的:
- 开发一种用于合成材料中受控,增长诱导的形状转换的方法.
- 通过空间控制的聚合,实现显著的质量运输和重塑.
- 创建可以在生长过程中自主改变形状的软材料.
主要方法:
- 在系统中利用了八甲基循环四氧化 (D4) 的阳离子环开放聚合 (阳离子 ROP).
- 使用强基催化剂来启动和控制聚合.
- 通过将单体混合物应用于特定样本区域来证明形状的转变.
主要成果:
- 通过受控生长,成功地将一个平面方形的样品转化为球体,而无需重塑.
- 实现了对生长中的聚合物体大小和形状的精确控制.
- 证明了机械性质的调节,自我愈合能力和生长部位的可用性.
结论:
- 开发的方法使得通过空间控制的聚合物在合成材料中实现受控,增长诱导的形状转换.
- 这种方法为创建具有量身定制的形状和表面形态的软材料提供了一条新的途径.
- 该技术为设计材料提供了一个平台,可以通过大规模运输和集成自主调整其形式.
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