Influence of organic solvent/ionic liquid mixture system on solubility of cellulose

被引：0
|
作者：
机构：
[1] College of Light Industry and Food Sciences, South China University of Technology, Guangzhou
[2] State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou
来源：
Wang, Zhao-Mei | 1600年 / Journal of Functional Materials卷 / 45期
关键词：
Cellulose; Dissolution; Ionic liquid; Organic solvent;
D O I：
10.3969/j.issn.1001-9731.2014.22.014
中图分类号：
学科分类号：
摘要：
A complex solvent with reduced viscosity was established by mixing ionic liquid and the protic organic solvents. The dissolving and solution property of cellulose in the complex solvent was studied. Results demonstrated that DMSO, DMF, and DMAc can effectively reduce the viscosity of the mixing system. The viscosity was fell by almost half when the mass fraction of 20% organic solvent. And the viscosity of the mixing system of the three organic solvents decreased 50%. But the optimum solubility of cellulose was gained in the mixing system with a mass ratio of DMSO/ [Emim]Ac 20%. The solubility of the pine cellulose with a high polymerization degree of 1460 increased from 5.0 g/100 g to 7.5 g/100 g when 20%(w/w) DMSO was added to [Emim]Ac at 90℃, dissolution time reduced. It was confirmed by the infrared spectra that cellulose can be uniformly dissolved in the DMSO/[Emim]Ac mixture without derivation.X-ray diffraction spectra indicated that crystalline form of pine cellulose transformed completely from type I to type II after regeneration from ethanol. ©, 2014, Journal of Functional Materials. All right reserved.
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页码：22065 / 22069
页数：4
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