循环和无水化环开放共聚合,在聚--中产生新的ABB序列
Ryan W F Kerr1, Alexander R Craze1, Charlotte K Williams1
1Department of Chemistry, Chemistry Research Laboratory 12 Mansfield Road Oxford OX1 3TA UK charlotte.williams@chem.ox.ac.uk.
Chemical science
|July 26, 2024
概括
这项研究提出了使用Zr (IV) 催化剂对聚-乙烯的多功能合成. 该方法允许调节性质和材料科学中的多种应用.
科学领域:
- 聚合物化学 聚合物化学
- 材料科学 材料科学 材料科学
背景情况:
- 聚 (聚-乙烯) 结合了刚性和灵活的以太链接,提供了独特的特性.
- 现有的合成路径在单体选择和结构控制方面可能缺乏多功能性.
研究的目的:
- 为具有可变组成和结构的聚 (-乙烯) 开发一种普遍适用的合成方法.
- 探索这些新型共聚合物在各种应用中的潜力.
主要方法:
- 无水化物,环氧化物和循环乙烯的环开 copolymerization 催化由Zr(IV).
- 使用了一系列商业单体,包括芳香,不和三环无水化物,以及各种氧化物和循环.
- 通过 thiol-ene 反应进行后聚合修饰,以引入基功能.
主要成果:
- 成功合成了ABB和ABC类型的聚乙烯--乙烯,具有受控的分子重量 (4-11公斤mol-1) 和狭窄的分散度.
- 聚合物在270-344°C之间呈现热分解和调节性玻璃过渡温度 (-50至48°C).
- 基功能化共聚合物表现出适度的水友性,由水接触角测量证明.
结论:
- 建立了一种序列选择性共聚合催化剂,用于生产各种聚--乙烯.
- 开发的方法为创建新型聚合物材料提供了一个多功能平台.
- 这些共聚合物显示出在液体配方,电解质,表面活性剂,增塑剂,粘合剂,涂料,弹性体和泡中的应用的前景.
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