基于2,3-butanediol和乙烯糖醇的二甲甲酸共聚合物及其特性
Marian Blom1,2, Robert-Jan van Putten1,2, Kevin van der Maas2
1Industrial Sustainable Chemistry, Universiteit van Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands.
Polymers
|August 10, 2024
概括
这项研究引入了使用生物基2,3-butanediol (2,3-BDO) 来增强热性能的新型共聚合物. 虽然合成具有挑战性,但这些聚烯提供了改进材料的潜力,尽管透性比PET更高.
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
- 可持续的高分子.
背景情况:
- 像PET这样的传统聚合物在热性能和结晶性方面存在局限性.
- 在聚合物科学中,对可持续的,生物基替代品的需求越来越大.
- 2,3-butanediol (2,3-BDO) 是一种生物基二醇,有可能改变聚的特性.
研究的目的:
- 为了合成和描述基于铁甲酸盐的新型共聚合物,其中包含不同比例的2,3-butanediol (2,3-BDO) 和乙烯基醇 (EG).
- 研究2,3-BDO结合对分子重量,热性质 (玻璃过渡温度,Tg),结晶性,透性和拉伸性质的影响.
- 评估2,3-BDO作为先进聚合物的可持续构建块的潜力.
主要方法:
- 通过对二甲基乙烯酸衍生物的多重凝结与2,3-BDO和EG.混合物合成共聚.
- 使用测定分子量 (Mn),玻璃过渡温度 (Tg) 和拉伸性能的技术进行表征.
- 测量水和氧气的透性,以评估屏障特性.
主要成果:
- 合成了高达78%的2,3-BDO的共聚乙烯,达到高达31.5kDa的分子重量.
- 增加2,3-BDO含量使玻璃过渡温度 (Tg) 从88°C提高到104°C.
- 水和氧的透性随着2,3-BDO含量增加而显著增加,甚至在低度下也超过了PET的性能. 拉伸性能仍然与PET相似.
结论:
- 2,3-butanediol可以加入到甲聚合物中,以增加Tg并降低晶度.
- 由于二次二醇的反应性较低,以高的2,3-BDO含量达到高分子量仍然存在挑战.
- 尽管透性增加,但2,3-BDO为聚钢提供了一条可持续的路线,具有量身定制的热和晶体特性.
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