刚性-柔性结合的树突分子兴奋剂:将商业聚合物激活成耐恶劣条件的多重可重复使用的强超分子粘合剂的通用方法
Jie Feng1, Ziwei Lin1, Yang Zhang1
1Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, Key Laboratory of High Performance Polymer-based Composites of Guangdong Province, GBRCE for Functional Molecular Engineering, School of Chemistry, Sun Yat-sen University, Guangzhou, 510006, China.
Angewandte Chemie (International ed. in English)
|July 20, 2024
概括
研究人员使用树突分子兴奋剂策略开发了一种新的超分子粘合剂. 这一策略增强了商业聚合物,创造了具有强粘度,可回收性和适应恶劣条件的粘合剂,包括超低温.
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
- 粘合剂技术 技术 粘合剂技术
背景情况:
- 开发具有高性能,可回收利用性和适应极端条件的功能合剂仍然是一个重大挑战.
- 现有的粘合剂通常会损害粘合强度,可重复使用性或在恶劣环境 (如超低温或湿条件) 中的性能等性能.
研究的目的:
- 引入一种一般的树突分子兴奋剂策略,以创建一种新的超分子粘合剂类别.
- 增强商业聚合物具有优越的粘附性,可回收性和耐超低温和潮湿环境的耐受性.
主要方法:
- 作为辅助剂的刚性-柔性合树突分子M4C8OH的合理设计.
- 将M4C8OH转化为商业聚合物,特别是聚烯酸 (PCL),以形成超分子粘合剂 (PCL-M4C8OH).
- 研究对非共价相互作用和键的调制,以增强凝聚力和相间相互作用.
主要成果:
- 用M4C8OH合的PCL粘合剂的粘合强度显著提高,高达原始PCL的2.87倍.
- 在室温 (25°C) 和超低温 (-196°C) 均观察到特殊的粘合强度,性能优于商业和报告的粘合剂.
- 该PCL-M4C8OH表现出增强的多用途性和显著的耐受性超低温和各种湿环境.
结论:
- 树突分子兴奋剂策略在从商业聚合物中创建高性能超分子粘合剂方面是有效的.
- 剂M4C8OH在通过分子结构与性质关系增强粘附方面发挥着至关重要的作用.
- 这种多功能方法可以扩展到各种聚合物矩阵,为各种新的超分子粘合剂应用铺平了道路.
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