STUDY ON THE DISSOLUTION OF CELLULOSE IN IONIC LIQUID
Cellulose samples extracted from sugarcane bagasse have been successfully dissolved in ionic liquid 1-butyl-3-methylimidazolium (BMIMCl). The native cellulose and regenerated cellulose from BMIMCl solution were characterized by FT-IR, solid-state CP/MAS 13C NMR, and thermal analysis. The result of FT-IR indicated that ionic liquid is a direct solvent for cellulose. Solid state CP/MAS 13C-NMR studies showed that cellulose with low crystallinity or amorphous cellulose was obtained after dissolution and regeneration of cellulose from ionic liquids. It was also found that the thermal stability of the regenerated cellulose sample decreased upon dissolution. In addition, the intrinsic viscosity, degree of polymerization, and molecular weight of the cellulosic sample decreased after regenerated.
Cellulose Dissolution Characterization Ionic liquid
Wei-ying LI Chuan-fu LIU Run-cang SUN Ai-ping ZHANG Feng PENG
State Key Laboratory of Pulp and Paper Engineering,South China University of Technology,Guangzhou 510640,China
国际会议
广州
英文
829-834
2008-12-03（万方平台首次上网日期，不代表论文的发表时间）