一个水可回收的,坚固的,自我愈合的基于糖的超分子网络,通过Maillard-analogue初始化聚合物的初始化来实现
Siyang Li1, Tow-Jie Lok2, Shi-Han Ngo1
1Center for X-Mechanics, Department of Engineering Mechanics, Zhejiang University, Hangzhou 310027, China. wongtuckwhye@utm.my.
Materials horizons
|December 22, 2025
概括
我们开发了一种可持续的,以水为基础的方法,使用马尔和烯胺制造高性能聚合物. 这些可适应的聚合物强,自我愈合,在水中完全可回收,为先进材料提供绿色替代品.
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
- 绿色化学 绿色化学
背景情况:
- 交叉链聚合物提供了先进的特性,但由于不可逆转的交叉链或共价适应性网络 (CAN) 的有限可塑性而面临回收挑战.
- 目前用于CAN的回收方法通常需要催化剂,并表现出有限的固态可塑性,阻碍了它们的可持续性.
- 开发可持续和可回收的高性能聚合物对于环境和工业应用至关重要.
研究的目的:
- 引入一种新的,以水为媒介的聚合策略,用于制造可回收,功能性的聚合物.
- 为了利用马拉德反应为聚合物合成所启发的无催化剂的水性反应.
- 开发具有自我愈合和重塑能力的适应性高分子,在水中完全可回收利用.
主要方法:
- 在100°C以下,使用马尔作为启动剂和功能侧组,对烯胺 (AAm) 进行单水性聚合.
- 通过键和动态 imine 链接形成自适应功能化的超分子网络 (AFSNs).
- 弹性质的特征,包括拉伸强度,延长,断裂能量,粘合性能和自我愈合能力.
主要成果:
- 成功合成具有高机械强度 (高达5MPa),延长 (高达1000%) 和断裂能量 (36kJ m-2) 的AFSN.
- 证明了强大的粘合性能 (高达4.8MPa) 和快速的室温自我愈合.
- 仅使用水而没有化学降解,实现了弹性体的完整和重复溶解和再加工.
结论:
- 开发的以水为媒介的聚合方式为高性能的可回收聚合物提供了可持续和环保的途径.
- AFSN具有出色的机械和自我愈合特性,适合各种应用.
- 这种方法为绿色聚合物化学提供了切实可行的解决方案,减少了废物和环境影响.
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