对于硫化环开环共聚合物的单体中心选择性指南
Merlin R Stühler1,2, Marie Kreische2, Christoph Fornacon-Wood1
1Makromolekulare Chemie, Universität Bayreuth Universitätsstraße 30 95447 Bayreuth Germany alex.plajer@uni-bayreuth.de.
Chemical science
|October 31, 2024
概括
现在可以通过催化环开放共聚合 (ROCOP) 来实现含硫聚合物的受控合成. 本研究确定了选择性的关键因素,使得创建先进的,可持续的硫化聚合物成为可能.
科学领域:
- 聚合物化学 聚合物化学
- 可持续材料科学科学 可持续材料科学
- 有机合成 有机合成
背景情况:
- 含硫聚合物提供可持续性好处,如可降解性和可回收性.
- 目前的合成方法,特别是催化环开放共聚合 (ROCOP),缺乏对微观结构和性质的控制.
- 为了推进这些材料,需要在硫化ROCOP中进行选择性的预测模型.
研究的目的:
- 调查硫化ROCOP反应中控制选择性的因素.
- 开发用于控制聚合物微观结构和特性的策略.
- 为了使精确定义的含硫聚合物的合成.
主要方法:
- 使用多种单体进行ROCOP的勘探:硫化硫酸/二硫化碳和环氧化物,硫酸,氧化.
- 对反应机制的分析,重点关注催化剂结合的链末和反反应.
- 实施单体选择,环应变优化和受控终止策略.
主要成果:
- 鉴定了与催化剂结合的氧化物链末端的反作为副产品的主要来源.
- 通过特定的单体选择,最大限度地减轻副作用,最大限度地减轻环应变和及时终止.
- 通过使用乙烯氧化物和各种氧乙,成功合成了完美交替的聚 (?? Ester-Alt-Thioester).
结论:
- 硫化ROCOP的选择性可以通过战略性单体选择来控制,而不仅仅是催化剂设计.
- 机械学的洞察力为开发未来选择性聚合方法提供了基础.
- 这项工作将硫化聚合物推进为传统材料的可行,可持续的替代品.
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