通过双烯酸盐合成多-罗拉克) 稀土金属复合物介导环开聚合及其化学回收
Hao Jiang1, Zhiyuan Li1, Yanan Dai1
1Key Laboratory of Advanced Mass Spectrometry and Molecular Analysis of Zhejiang Province, School of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, China.
Inorganic chemistry
|December 27, 2023
概括
新的稀土金属催化剂有效催化生物基 δ-caprolactone 的环开聚合. 这些催化剂还使得在温和的条件下有效的化学回收得到的聚-烯酸.
科学领域:
- 有机金属化学 有机金属化学
- 聚合物科学 聚合物科学
- 催化剂是一种催化剂.
背景情况:
- 开发用于聚合物合成的可持续催化剂至关重要.
- 稀土金属复合物具有独特的催化性能.
- 像 δ-caprolactone 这样的生物基单体对绿色化学具有吸引力.
研究的目的:
- 为了合成新型的氨基-氨基-双酸) 稀土金属复合物.
- 为了研究它们在 δ-caprolactone (δCL) 的环开放聚合 (ROP) 中的催化活性.
- 探索产生的多-烯酸盐 (PδCL) 的化学回收.
主要方法:
- 合成新的氨基-氨基-双酸配体和稀土金属复合物.
- 用合成的复合物作为催化剂,对δ-caprolactone (δCL) 的环开聚合 (ROP).
- 使用1H NMR光谱和MALDI-TOF MS.进行聚合物的表征.
- 对聚乙烯-烯酸盐 (PδCL) 的化学回收的研究.
主要成果:
- 成功制备了新型稀土金属锡基复合物.
- 复合物在 δCL 的 ROP 中表现出高的催化活性,产生具有受控分子量和狭窄分布 (Đ < 1.2) 的聚合物.
- 通过高产量 (>92%在溶液中,>82%在散装中) 实现了PδCL的有效化学回收.
结论:
- 合成的稀土金属复合物是生物基 δCL 的 ROP 的有效催化剂.
- 这些催化剂可以生产明确的多-烯酸).
- 该研究证明了PδCL的化学回收利用的可行途径,有助于循环经济.
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