亚齐里丁与元素硫的阶段增长聚合:容易获得线性多硫化物,并将其用作可回收粘合剂
Huishan Huang1, Shuojia Zheng1, Jiye Luo1
1School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, 510006, P. R. China.
Angewandte Chemie (International ed. in English)
|January 3, 2024
概括
研究人员开发了一种新方法,使用元素硫和 bis ((aziridine) 来制造线性,可回收的聚合物. 这些新型含硫聚合物对钢和等金属具有特殊的粘合性能.
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
- 有机合成 有机合成
背景情况:
- 传统的聚合方法往往会产生易碎或不可回收的材料.
- 元素硫是一种丰富且廉价的原料,但其直接聚合可能具有挑战性.
- 开发可持续的高性能聚合物对于先进的材料应用至关重要.
研究的目的:
- 探索一种新型的聚合途径,使用元素硫和 bis ((aziridine) 被一个有机基催化.
- 合成和表征新的线性含硫聚合物.
- 评估合成聚合物的粘合性和可回收性.
主要方法:
- 在有机基的存在下, bis ((aziridine) 与元素硫的环开聚合.
- 聚合物结构的表征,包括硫胺/胺部分和寡硫化物键.
- 对钢和基板的粘合性能进行评估.
- 通过动态的S-S债券交换和溶液可加工性来研究聚合物的可重复使用性和可回收性.
主要成果:
- 成功合成了带有硫胺/胺单元和寡硫化键 (平均S2段) 的线性聚合物.
- 一个模型反应证实了硫对亚齐里丁的核友添加.
- 聚合物链内的动态S-S债券交换在有机基的存在下得到验证.
- 合成的多硫化物在钢和上表现出极好的粘合性能,以及良好的重复使用性和可回收性.
结论:
- 亚齐里丁与元素硫的有机基催化反应为线性含硫聚合物提供了一条创新的途径.
- 这些聚合物表现出良好的粘合能力,并且由于动态共价化学,可以高度重复使用和回收利用.
- 这种方法为生产用于粘合剂和其他潜在应用的先进硫基聚合物提供了一种可持续和多用途的方法.
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