烯碳酸盐的协调环开放聚合,以向无素和异酸盐的聚氨进行聚合
Jonas Futter1, Leon Ferdinand Richter1, Stefanie Hörl2
1Technical University of Munich: Technische Universitat Munchen, Department of Chemistry, Lichtenbergstraße 4, 85748, Garching, GERMANY.
Angewandte Chemie (International ed. in English)
|April 24, 2025
概括
本研究介绍了一种可持续的,无基的方法,用于从 (R) - 烯制造生物基聚氨. 这种新的工艺产生了高质量的聚合物,具有出色的热性能和可回收性,在材料科学中推进了绿色化学.
科学领域:
- 聚合物化学 聚合物化学
- 绿色化学 绿色化学
- 可持续材料 可持续材料
背景情况:
- 传统的聚氨合成依赖于危险的素和异酸盐.
- 在聚合物生产中,对可持续和生物基替代品的需求越来越大.
- (R) - 烯是一种可再生的烯,为新型聚合物提供了构建块的潜力.
研究的目的:
- 开发一种不含素和异酸盐的聚氨合成途径.
- 使用 (R) - 烯作为聚氨合成的生物基原料.
- 研究由此产生的生物基聚氨的聚合机制和特性.
主要方法:
- 使用二甲基碳酸盐合成循环烯基碳酸盐单体 (LU).
- 由Sn ((Oct) 2.2) 催化的LU单体的协调环开聚合.
- 使用NMR,SC-XRD,ESI-MS,GC-MS和元素分析对单体和聚合物的表征.
- 机械学研究包括运动实验,终端组分析和同位素标记.
主要成果:
- 实现了循环碳酸盐单体LU的高产量.
- 协调环开放聚合产生了分子重量高达16.0kg/mol的聚氨,聚分散度为1.5.5.
- 由此产生的半晶体聚氨表现出极好的热稳定性,分解温度为252°C,玻璃过渡温度高于150°C.
- 使用相同的催化剂实现了聚氨的高效脱聚合.
结论:
- 已经建立了一个无素和异酸盐的可行途径,用于从 (R) - 烯合成生物基聚氨.
- 该研究强调了基碳酸盐作为单体的潜力,用于可持续的聚合物开发.
- 开发的方法为环保和可回收聚氨材料提供了一个有前途的途径.
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