可回收的三基胺基玻璃制剂具有闭环可回收性
Zeyou Hu1, Fan Hu1, Lifeng Deng1
1College of Chemistry and Chemical Engineering, Hunan Key Laboratory of Micro & Nano Materials Interface Science, Central South University, Changsha, 410083, China.
Angewandte Chemie (International ed. in English)
|June 14, 2023
概括
研究人员开发了一种新的可回收热固体,使用三基胺动态共价网络. 这种可持续的聚合物可以通过化学回收转化为单体并进行重制,保持原始强度,提供更绿色的替代品.
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
- 可持续化学 可持续化学
背景情况:
- 热被广泛使用,但难以回收利用,这给环境带来了挑战.
- 通过化学和热力学方法开发可回收的热对可持续性至关重要.
研究的目的:
- 设计和合成一种基于基胺的新型动态共价网络,用于可回收的热电.
- 研究开发的聚合物网络的可回收性,机械性能和适应性.
主要方法:
- 从2,4,6-三甲基醇和二次氨基酸中合成基于三甲基胺的动态共价网络.
- 描述网络的动态特征,机械性能 (抗拉强度,模量) 和可回收性.
- 评估材料形成无催化剂,低温可重编程的共价适应性网络 (vitrimer) 的能力.
主要成果:
- 三基胺网络表现出动态的共价键,这是由于分子内键和分离体稳定性的减少.
- 该聚合物具有很高的机械性能 (79.4 MPa 的抗拉强度, 571.4 MPa 的模量).
- 通过水溶液实现高达90%的单体产量回收,恢复原始材料的强度;开发了一种无催化剂的玻璃化物.
结论:
- 一种新的,高度可回收的热固体是使用triquetoenamine动态共价网络开发的.
- 该材料表现出卓越的机械性能和可回收性,可实现单体-网络-单体转换.
- 设计方法为创造可持续的聚合物和玻璃材料提供了一条途径,这些聚合物和玻璃材料具有增强的可压缩性和可回收性.
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