Journal
CELLULOSE
Volume 19, Issue 1, Pages 37-44Publisher
SPRINGER
DOI: 10.1007/s10570-011-9607-y
Keywords
Cellulose; Ionic liquids; Biomass dissolution; Carbon dioxide; Cellulose dissolution
Funding
- Ontario Graduate Scholarship fund
- Ontario Ministry of Research and Innovation
- Ontario Research Chair in Green Chemistry and Engineering Program
- Natural Sciences and Engineering Research Council of Canada (NSERC)
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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.
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