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纤维素溶解在基于伊米达的双盐离子液中
M Mahbubur Rahman1, M Sarwar Jahan2, Md Mominul Islam3
1Bangladesh Council of Scientific and Industrial Research, Dr. Qudrat-i-Khuda Road, Dhaka 1205, Bangladesh; Department of Chemistry, University of Dhaka, Dhaka 1000, Bangladesh.
International journal of biological macromolecules
|April 4, 2024
概括
双盐离子液体 (DSILs) 与单个离子液体 (ILs) 相比,具有增强的纤维素溶解性. 这些DSIL提供了一种可回收和有效的纤维素加工和再生方法.
科学领域:
- 材料科学 材料科学 材料科学
- 绿色化学 绿色化学
- 聚合物化学 聚合物化学
背景情况:
- 纤维素溶解对于其加工成各种材料至关重要.
- 传统的溶剂往往会引起环境问题.
- 离子液体 (ILs) 已成为纤维素溶解的有希望的替代品.
研究的目的:
- 为了研究纤维素在双盐离子液体 (DSIL) 中的溶解.
- 为了比较DSILs与单个ILs在纤维素溶解性的疗效.
- 探索DSILs作为纤维素加工的可持续方法的潜力.
主要方法:
- 合成具有不同分子分量的DSILs ([C4mim](CH3CO2) xCl1-x).
- 使用商业纤维素 (CC) 粉末, kraft 纸 (KP) 和前水解 kraft 纸 (PHKP) 评估纤维素溶解度.
- 使用水作为抗溶剂的纤维素再生和再生材料的分析.
主要成果:
- 与单个IL相比,DSILs显著提高了纤维素溶解度.
- CC粉末的最大溶解度在100°C时在[C4mim](CH3CO2) 0.6Cl0.4中达到了32.8%的重量.
- 在没有结构性降解的情况下,DSILs表现出极好的可回收性 (>99%).
结论:
- 与传统的IL相比,DSIL是纤维素的优质溶剂.
- 开发的DSIL系统为纤维素溶解和再生提供了可持续和高效的途径.
- 在基于纤维素的材料加工中,DSIL具有重要的工业应用潜力.
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