可回收的聚乙烯和聚乙烯共) 通过氨基酸N-酸化的环开放级联聚合
Shuo Wang1, Zi-You Tian1, Hua Lu1
1Beijing National Laboratory for Molecular Sciences, Center for Soft Matter Science and Engineering, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, China.
Angewandte Chemie (International ed. in English)
|July 29, 2024
概括
这项研究引入了一种新的聚合方法,用于制造可持续的多乙烯 (PTE) 和独特的多乙烯共 (PTE-co-PP). 控制环开放级联聚合 (ROCAP) 克服了这些先进可回收材料之前的合成挑战.
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:
- 聚乙烯 (PTE) 提供可持续性好处,如可降解性和可回收性.
- 合成具有多种功能组的PTE和共聚合物面临着低单体聚合性和副作用等挑战.
研究的目的:
- 开发一种可控的聚合方法,用于生产PTE和新型多共 (PTE-co-PPs).
- 为了克服合成的障碍,在创建功能性共聚合物与酸骨干的过程中.
主要方法:
- 环开环级联聚合 (ROCAP) 的N-(2-(乙) 乙烯) -甘氨酸N-碳酸化物 (TE-NCA).
- 使用双催化剂 (碳酸-三级胺) 来实现聚合过程中的分子内S-N转移.
- 萨科辛NCA (Sar-NCA) 和TE-NCA的随机共聚变.
主要成果:
- 实现了受控的聚合,产生PTE和P(TE-co-PP) 的分散度<1.10和Mn高达84.5kDa.
- 精确控制了共聚合物中铁与类单位的比率.
- 合成的乙烯嵌入式聚沙科辛,表现出容易的骨干降解和水溶性.
结论:
- 开发的ROCAP方法代表了N-碳素化 (NCA) 聚合的重大进步.
- 扩大了级联聚合技术的范围.
- 提供了一条有效的合成路径,以功能性PTE和P ((TE-co-PP) 以前无法访问.
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