高等学校化学学报 ›› 2009, Vol. 30 ›› Issue (7): 1469.

• 研究论文 • 上一篇    下一篇

纤维素在离子液体[AMMor]Cl/[AMIM]Cl混合溶剂中的溶解性能

王美玲, 臧洪俊, 蔡白雪, 程博闻   

  1. 天津工业大学材料科学与化学工程学院, 改性与功能纤维天津市重点实验室, 天津 300160
  • 收稿日期:2008-10-08 出版日期:2009-07-10 发布日期:2009-07-10
  • 通讯作者: 臧洪俊, 女, 博士, 副教授, 主要从事有机合成及高分子材料的绿色化学. E-mail: chemhong@126.com
  • 基金资助:

    天津市自然科学基金(批准号: 07JCYBJC02200)资助.

Dissolubility of the Cellulose in [AMMor]Cl/[AMIM]Cl

WANG Mei-Ling, ZANG Hong-Jun*, CAI Bai-Xue, CHENG Bo-Wen   

  1. Department of Material Science and Chemistry Engineering, Tianjin Polytechnic University, Tianjin Municipal Key Laboratory of Fiber Modification & Functional Fiber, Tianjin 300160, China
  • Received:2008-10-08 Online:2009-07-10 Published:2009-07-10
  • Contact: ZANG Hong-Jun. E-mail: chemhong@126.com
  • Supported by:

    天津市自然科学基金(批准号: 07JCYBJC02200)资助.

摘要:

研究了纤维素在混配离子液体N-甲基-N-烯丙基吗啉氯盐[AMMor]Cl/3-甲基-1-烯丙基咪唑氯盐[AMIM]Cl中的溶解性能, 结果表明, [AMMor]Cl/[AMIM]Cl混配溶剂能有效溶解天然纤维素, 且在相同条件下, 溶解能力要优于离子液体[AMIM]Cl; 随着溶解温度的升高, 溶解时间大大缩短. 利用FTIR, XRD和TGA方法分析了再生纤维素的化学结构和热稳定性, 结果表明, 未经活化的纤维素可直接溶于[AMMor]Cl/[AMIM]Cl而不发生其它衍生化反应, 且天然纤维素在该溶剂体系中纤维素聚合度下降较小.

关键词: 纤维素; 离子液体; 溶解; 聚合度

Abstract:

The mixed ionic liquid solvent N-methy-N-allylmorpholine chloride [AMMor]Cl/1-allyl-3-methylimidazolium chloride [AMIM]Cl can dissolve cellulose effectively. We surveyed the influence of the dissolution time and temperature to the dissolution properties. The chemical construction and thermostability of regenerated cellulose from the [AMMor]Cl/[AMIM]Cl were investigated with Fourier transform infrared(FTIR) spectroscopy, thermogravimetry(TG) and X-ray diffraction(XRD) measurements. Results show that the solubility cellulose in [AMMor]Cl/[AMIM]Cl is better than [AMIM]Cl under the same conditions. The cellulose samples without any pretreatment were readily dissolved in [AMMor]Cl/[AMIM]Cl in a relatively short time. In the course of dissolution, no other derivatizing reaction occurred and degrades slightly.

Key words: Cellulose; Ionic liquid; Dissolution; Degree polymerization

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