生物质衍生C8单体的可持续合成,用于闭环可回收和可生物降解的聚合物
Cheng-Bin Hong1, Weijie Qiu1, Wenjun Wang1
1Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China.
Journal of the American Chemical Society
|December 1, 2025
概括
本研究提出了一种可持续的方法,用于从可再生资源中制造生物质塑料. 由此产生的聚烯具有出色的性能,可回收利用性和生物降解性,为可持续的未来提供了优质的材料.
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
- 绿色化学 绿色化学
背景情况:
- 完全基于生物质的塑料对可持续发展至关重要,但在单体合成方面面临挑战.
- 适合单体的有限可用性阻碍了创建高性能,可回收和生物降解的聚合物.
- 从可再生原料开发高效的长链单体路径至关重要.
研究的目的:
- 开发一种可持续的合成途径,从生物质衍生的前体中开发出一种关键的C8α,ω-二碳酸酸C8α,ω-二碳酸的合成途径.
- 为了从酸中产生额外的C8单体,8-氧 octanoic 酸和1,8-octanediol.
- 从这些单体中提取的聚 (PHO和POS) 合成和评估其性能,可回收性和生物降解性.
主要方法:
- 使用Pd/HZSM-5和MoOx/TiO2催化剂合成亚酸的生物质衍生酸的顺序Knoevenagel冷凝和氧化.
- 在CoOx催化剂上化酸以产生8-氧酸和1,8-二醇.
- 合成单体的融化聚凝合产生聚8-氧酸 (PHO) 和聚乙烯亚酸 (POS).
主要成果:
- 从可再生原料中获得了酸 (85.5%),8-氧 octanoic 酸 (89.5%) 和 1,8-octanediol (92.8%) 的高产.
- 合成的PHO和POS聚合物具有与低密度聚乙烯相比的热和机械性能.
- 证明了两种聚烯的绝佳闭环化学可回收性 (∼95%) 和生物降解性 (∼87%).
结论:
- 建立了从可再生资源中合成长链α,ω-二碳酸和相关单体的可行战略.
- 开发出具有全生命周期可持续性的高性能聚合物 (PHO和POS),包括可回收和生物降解性.
- 通过为先进材料提供对单体的实用途径,推进了可持续聚合物的领域.
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