闭环可回收和完全可再生的液晶网络,具有室温可编程性和可重新配置的功能
Chenxuan Zhang1, Zhuoqiang Zhang1, Xiaokong Liu1
1State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012, P. R. China.
Angewandte Chemie (International ed. in English)
|June 26, 2024
概括
这项研究介绍了一种基于可再生亚博的新型动态共价液晶网络 (DCv-LCN),可以在室温下进行编程. 这种材料允许完全的聚合物到单体的回收利用,从而创造可持续的执行器和机器人.
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
- 超分子化学 超分子化学
背景情况:
- 动态共价液晶网络 (DCv-LCNs) 提供了可编程性,但受到热辅助加工和聚合物对聚合物回收利用的限制.
- 由于热分解和干扰,现有的方法在重复处理后会导致结构降解和性能损失.
研究的目的:
- 开发一个完全可再生的DCv-LCN,具有室温可编程性和单体水平的化学可回收性.
- 展示一种可持续的方法来创建先进的LCN执行器和智能机器人.
主要方法:
- 使用二甲和三胺单体之间形成的动态伊胺键合成基于阿佐的DCv-LCN.
- 室温编程由水激活的胺基键动态触发.
- 通过在酸溶剂介质中以酸催化 imine 键的水解去聚合.
- 单体的回收和再生用于闭环循环回收和添加剂重构.
主要成果:
- 一种基于亚博的新型DCv-LCN成功合成,并通过浸泡水证明了室温可编程性.
- 这种材料可以作为UV/Vis光驱动的执行器.
- 在室温下使用酸溶剂介质实现了完全去聚合到高纯度单体.
- 回收的单体被用于再生新的DCv-LCN和执行器,展示了闭环可回收性和添加剂集成.
结论:
- 已经开发出一种可再生,室温可编程的DCv-LCN,具有聚合物到单体的可回收性.
- 这种方法克服了与传统DCv-LCN相关的热处理和降解的局限性.
- 该材料使复杂的执行器和具有可重新配置功能的机器人能够可持续地制造.
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