SUCCINOYLATION OF SUGARCANE BAGASSE CELLULOSE IN IONIC LIQUID

摘要

The chemical modification of SCB cellulose with succinic anhydride using ionic liquids as reaction medium was studied. The results showed that dissolution of the native cellulose in [C_4mim]Cl led to the degradation of the macromolecular polymer. Succinoylation of cellulose was achieved in [C_4mim]Cl ionic liquid/DMSO system, and DS of the cellulosic products increased with an increment in the molar ratio of succinic anhydride/AGU. FT-IR and solid-state CP/MAS ~(13)C-NMR spectra produced evidences for succinoylation reaction and the results showed that the succinoylation at C-6, C-2 and C-3 all occurred. The thermal stability of the succinylated cellulose decreased upon chemical modification.