通过亚齐里丁和乙烯氧化物的阳性共聚化,快速访问两多块架构
Tassilo Gleede1, Elisabeth Rieger1, Jan Blankenburg2,3
1Max-Planck-Institut für Polymerforschung (MPI-P) , Ackermannweg 10 , 55128 Mainz , Germany.
Journal of the American Chemical Society
|October 9, 2018
概括
这项研究首次实现了亚齐里丁和乙烯氧化物的共聚化,从而产生了新的两块共聚物. 这些聚合物作为响应性表面活性剂,并使新的宏分子架构成为可能.
科学领域:
- 聚合物化学
- 材料科学
- 有机合成
背景情况:
- 阿齐里丁和环氧化物的共聚化是制造先进的聚合物材料的长期目标.
- 在聚合物化学中,实现这些应变异质环的受控共聚化一直是一个重大挑战.
研究的目的:
- 开发一种用于乙烯氧化物 (EO) 和硫胺激活亚齐里丁的活体共聚的方法.
- 合成具有可控架构的定义良好的两块共聚物.
- 探索这些新型共聚物作为响应性表面活性剂和纳米结构形成的应用.
主要方法:
- 活氧和阿扎尼离子环开放聚合.
- 一个合聚合技术.
- 实时1HNMR光谱测定反应率.
- 用于纳米粒子制备的微乳液聚合.
主要成果:
- 从EO和激活的亚齐里丁中成功合成两块共聚物.
- 在反应率上表现出极大的差异, 使得可控块形成.
- 获得的具有狭窄分子量分布的块共聚物 (Mw/Mn ≤1.3).
- 用于乳液稳定和聚合物纳米粒子制备的共聚物.
- 合成了前所未有的两多块共聚物 (五和四).
结论:
- 这项工作为合成复杂的宏分子架构和纳米结构建立了强大的策略.
- 开发的方法可以获得一种新型的非离子,刺激反应的表面活性剂.
- 这种独特的反应性使得以前无法实现的复杂块共聚物的高效生产成为可能.
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