硬化可治愈的超分子双聚合物网络基于结合和金属协调
Ilaria Onori1, Georges J M Formon1,2, Christoph Weder1,2
1Adolphe Merkle Institute, University of Fribourg, Chemin des Verdiers 4, 1700, Fribourg, Switzerland.
Chemistry (Weinheim an der Bergstrasse, Germany)
|October 9, 2024
概括
这项研究引入了一种新的双聚合物网络 (DN),使用两个超分子聚合物. 由此产生的材料表现出增强的弹性,性和自我愈合特性,超过其单独的组件.
科学领域:
- 聚合物化学 聚合物化学
- 材料科学 材料科学 材料科学
- 超分子化学 超分子化学
背景情况:
- 双聚合物网络 (DN) 集成两个相互透的聚合物网络.
- 这些材料可以表现出超出其组成部分总和的新兴性质.
- 超分子聚合物 (SMPs) 使用可逆的非共价相互作用进行交叉链接.
研究的目的:
- 从两个不同的超分子聚合物 (SMP) 开发弹性双聚合物网络 (DN).
- 为了研究由不同非共价结合基因的聚乙烯酸组成的DN的特性.
- 探索刺激响应交叉连接对DN机械特性的影响.
主要方法:
- 使用可逆添加-碎片化链-转移聚合物合成基于聚乙烯酸的两个SMP.
- 结合了不同的非共价结合基因:2-ureido-4[1H]pyrimidinone (结合) 和2,6-bis(1'-methylbenzimidazolyl) pyridine (金属连接体复合).
- 通过两种SMP相互透,制造DN.
主要成果:
- 超分子DN结合了其构成网络的高热稳定性和爬行阻力.
- 该DN显示出出色的自我愈合能力.
- 与单个SMP相比,该材料具有更好的伸展性和性.
- 一个网络的选择性预拉伸增强了DN的机械性能,由于直角刺激响应交叉链接.
结论:
- 成功创建了一个新的弹性高分子双聚合物网络.
- DN表现出增强的机械性能,包括提高弹性,性和愈合能力.
- 超分子交叉链的直角刺激反应性允许可调节的机械增强.
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