-COOH和 -OH凝结反应利用生物质FDCA基聚合物
Jing Yi1,2, Yuze Dai1, Yuxuan Li1
1Division of Energy Materials (DNL 22), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China.
ChemSusChem
|February 10, 2024
概括
一种新的绿色凝结聚合法,利用环保溶剂和催化剂合成基于FDCA的聚,产生具有可调节性质的高质量材料,用于可持续应用.
科学领域:
- 聚合物化学 聚合物化学
- 绿色化学 绿色化学
- 材料科学 材料科学 材料科学
背景情况:
- 传统的聚合成通常涉及有毒溶剂和高温,导致变色和环境问题.
- 基于2,5-富兰迪碳酸 (FDCA) 的聚合物是石油塑料的有希望的可持续替代品,但它们的合成需要高效和环保的方法.
- 在FDCA基聚合物中实现高分子量和良好的外观对于其实际应用至关重要.
研究的目的:
- 开发一种绿色和可持续的溶液聚合法,用于合成基于FDCA的聚烯.
- 通过使用这种新方法研究具有改进性质的聚乙烯2,5-基碳酸盐 (PEF) 的合成.
- 探索该方法对一系列基于FDCA的聚烯的适用性,并阐明催化机制.
主要方法:
- 在绿色溶剂g-valerolactone (GVL) 中使用了-COOH和-OH凝结溶液聚合技术.
- 作为催化剂使用了4-二甲基亚胺胺 (DMAP) 和N-3-二甲基亚胺) -N'-乙基二胺 (EDC).
- 通过重新化聚合凝进行研究后聚合修饰,并使用现场13C-NMR与13C标记的酸进行机械研究.
主要成果:
- 成功合成了具有良好的白色外观和6.51×10gmol-1的分子量 (Mn) 的PEF.
- 通过在几分钟内重新化聚凝,保持低分散度 (Đ<1.40),实现了快速分子量增强 (Mn>2.5×104 g mol-1).
- 证明了该方法对各种基于FDCA的聚烯的多功能性,包括具有亚利法和环亚利法二醇的聚烯,并鉴定了由于耐热性较低而具有C=C双键的二醇的局限性.
结论:
- 报道的 -COOH和 -OH凝结溶液聚合为基于FDCA的聚合物合成提供了一条绿色,可持续和高效的途径.
- 该方法避免了变色和有毒溶剂,生产高质量的聚烯,具有可调节的分子量.
- 这项研究为可扩展和环保的基聚烯生产提供了基本策略.
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