1-丁基-3-甲基咪唑氯盐离子液体水溶液对纤维素的作用

doi:10.11949/j.issn.0438-1157.20141730

化工学报 ›› 2015, Vol. 66 ›› Issue (S1): 32-37.DOI: 10.11949/j.issn.0438-1157.20141730

1-丁基-3-甲基咪唑氯盐离子液体水溶液对纤维素的作用

王琳琳, 魏立纲, 马英冲, 李坤兰, 王艳涛, 丁珊, 万文英, 闫冰, 赵德扬, 王俊梅, 王鑫

大连工业大学轻工与化学工程学院, 辽宁大连 116034

收稿日期:2014-11-20 修回日期:2014-11-27 出版日期:2015-06-30 发布日期:2015-06-30
通讯作者: 魏立纲
基金资助:
国家自然科学基金项目(21106011, 21276034);辽宁省教育厅科学研究一般项目(L2012195)。

Effect of 1-butyl-3-methylimidazolium chloride-water mixtures on cellulose

WANG Linlin, WEI Ligang, MA Yingchong, LI Kunlan, WANG Yantao, DING Shan, WAN Wenying, YAN Bing, ZHAO Deyang, WANG Junmei, WANG Xin

School of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, Liaoning, China

Received:2014-11-20 Revised:2014-11-27 Online:2015-06-30 Published:2015-06-30
Supported by:
supported by the National Natural Science Foundation of China (21106011, 21276034).

摘要/Abstract

摘要：

在温度90℃, 压力1 MPa条件下, 研究[C₄mim]Cl-水溶液对纤维素的溶解和结构变化的影响。在离子液体含量为60%～95%时, 无定形纤维素可以部分溶解, 并且加去离子水后有纤维素再生。经过[C₄mim]Cl-水溶液处理一段时间后, 微晶纤维素的晶型并没有发生改变, 但纤维素的结晶指数和晶粒尺寸的大小都有明显的变化, 纤维素的分子内和分子间氢键相对强度也有明显变化。离子液体含量不同对微晶纤维素的作用程度不同。

关键词: 离子液体-水, 纤维素, 溶解度, 结晶度

Abstract:

Dissolution and crystalline structure changes of cellulose treated by 1-butyl-3-methylimidazolium chloride [C₄mim]Cl-water mixtures were investigated at 90℃ under 1.0 MPa. Amorphous cellulose was found to be partial dissolved in the [C₄mim]Cl-water mixtures with [C₄mim]Cl content of 60%—95%, and adding deionized (DI) water into the cellulose-[C₄mim]Cl solution for cellulose regeneration. The crystallinity index (CrI) and the dimension of average crystallite size (D_hkl) for MCC obviously change with increasing treatment duration, but retain the characteristic shapes of cellulose I crystalline structure. There are significant oscillations in the intensities of hydrogen bonds of cellulose for the mixtures with different [C₄mim]Cl content. Different contents of ionic liquid have different effect on microcrystalline cellulose.

Key words: ionic liquids-water, cellulose, solubility, crystallinity

中图分类号:

O636.1⁺1

王琳琳, 魏立纲, 马英冲, 李坤兰, 王艳涛, 丁珊, 万文英, 闫冰, 赵德扬, 王俊梅, 王鑫. 1-丁基-3-甲基咪唑氯盐离子液体水溶液对纤维素的作用[J]. 化工学报, 2015, 66(S1): 32-37.

WANG Linlin, WEI Ligang, MA Yingchong, LI Kunlan, WANG Yantao, DING Shan, WAN Wenying, YAN Bing, ZHAO Deyang, WANG Junmei, WANG Xin. Effect of 1-butyl-3-methylimidazolium chloride-water mixtures on cellulose[J]. CIESC Journal, 2015, 66(S1): 32-37.

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1-丁基-3-甲基咪唑氯盐离子液体水溶液对纤维素的作用

Effect of 1-butyl-3-methylimidazolium chloride-water mixtures on cellulose

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