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一种可伸缩,机械坚固的聚合物,表现出形状记忆辅助的自我修复和聚类触发的排放

Xiaoyue Wang^1,2, Jing Xu^1,2, Yaoming Zhang¹

¹Key Laboratory of Science and Technology on Wear and Protection of Materials, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000, China.

Nature communications

|August 5, 2023

概括

研究人员开发了一种新的聚氨尿素弹性体,具有卓越的机械强度和自我修复能力,利用形状记忆效应和超分子相互作用用于先进的材料应用.

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

背景情况:

开发自愈和可回收的聚合物往往会损害机械强度.
非共价相互作用是创建先进的聚合物材料的关键.

研究的目的:

合成具有增强机械性能的聚氨尿素弹性体.
在弹性体中实现形状记忆辅助的自我愈合行为.

主要方法:

在弹性体中内置了协调和键.
研究了超分子相互作用和分阶段能量消散.
评估机械性能 (强度,延长,性) 和形状记忆恢复.

主要成果:

优化的弹性体表现出出色的机械性能:强度为76.37 MPa,破裂时延长率为839.10%,性为308.63 MJ m−3.
通过形状记忆恢复促进的有效自我愈合.
在紫外线下观察到聚类触发发射与色光.

结论:

开发的弹性体为创建多功能材料提供了一个有前途的战略.
该材料显示出在刺激反应性聚合物和智能密封件中的应用潜力.
机械强度和自我愈合特性的结合是通过超分子工程实现的.

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