The effect of subcritical carbon dioxide on the dissolution of cellulose in the ionic liquid 1-ethyl-3-methylimidazolium acetate

被引：18

作者：

FitzPatrick, Michael ^{[1
]}

Champagne, Pascale ^{[1
,2
]}

Cunningham, Michael F. ^{[1
]}

机构：

[1] Queens Univ, Dept Chem Engn, Kingston, ON K7L 3N6, Canada

[2] Queens Univ, Dept Civil Engn, Kingston, ON K7L 3N6, Canada

来源：

CELLULOSE | 2012年 / 19卷 / 01期

基金：

加拿大自然科学与工程研究理事会;

关键词：

Cellulose; Ionic liquids; Biomass dissolution; Carbon dioxide; Cellulose dissolution; PRESSURE PHASE-BEHAVIOR; TEMPERATURE; COMPOSITE; SOLVENT; PLUS; CO2;

D O I：

10.1007/s10570-011-9607-y

中图分类号：

TB3 [工程材料学]; TS [轻工业、手工业、生活服务业];

学科分类号：

0805 ; 080502 ; 0822 ;

摘要：

The ionic liquid (IL) 1-ethyl-3-methylimidazolium acetate ([emim][OAc]) readily dissolves high concentrations of cellulose. However, the high viscosity of [emim][OAc] (162 cP at 20 A degrees C) could limit its use as a solvent for cellulose. Dissolved CO2 has been shown to decrease the viscosity of ILs. In this study, a 50 psi CO2 environment was applied for the dissolution of cellulose in [emim][OAc] to determine if the cellulose dissolution could be enhanced. Dissolution profiles of 4 wt% cellulose dissolved in [emim][OAc] were obtained over a 24 h period. A 75% increase in the amount of dissolved cellulose was observed with the application of a 50 psi CO2 environment.

引用

页码：37 / 44

页数：8

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