通过转化合成共聚化,合成具有二硫化物单元的可降解聚烯
Yu Xia1,2, Fulin Zhou2, Wenyan Hao1
1College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, China.
Polymers
|July 29, 2023
概括
研究人员开发了一种新方法,通过结合可切割的二硫化物键来制造可降解的多聚烯. 这种新的方法在转基因共聚化中使用二二硫化物 (DADS),提供可调节的二硫化物含量和保留的可加工性.
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:
- 二硫化物键是动态的共价键,可以通过化学刺激进行裂变和改造.
- 合成多硫化的现有方法包括二醇氧化和含硫化的单体聚合物.
- 将二硫化物单元纳入聚烯骨干的研究较少.
研究的目的:
- 开发一种新的策略,将可切割的二硫化物单元引入聚烯主链中.
- 为了合成可降解的多聚烯,使用二二硫化物 (DADS) 作为共称物.
- 研究由此产生的共聚物质的特性和可降解性.
主要方法:
- 用第二代格鲁布斯催化剂将二二硫化物 (DADS) 与循环催化物的转化共聚化.
- 合成具有不同二硫化物含量 (0.78.5 mol%) 和分子量 (5.842.8 kg·mol-1) 的共聚物.
- 配合聚合物的特性,包括热处理性和可降解性.
主要成果:
- 具有可调节二硫化物含量的共聚物在温和条件下成功合成.
- 由此产生的聚烯保持了出色的热处理能力.
- 经证实了可降解性,在用tri-n-butylphosphine治疗时显著降低了分子量.
结论:
- 已经建立了一种方便且有效的方法,通过DADS与转化酶共聚合来生产可降解的多聚烯.
- 这种方法允许控制地将二硫化物链接纳入聚烯骨干中.
- 合成的可降解聚烯为先进材料应用提供了潜在的潜力.
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