Journal
CARBOHYDRATE POLYMERS
Volume 78, Issue 3, Pages 389-395Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2009.04.028
Keywords
Cellulose; Succinic anhydride; Ionic liquid; Modification; DMAP
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Funding
- National Natural Science Foundation of China [30871994, 30710103906]
- Guangdong Natural Science Foundation [07118057, 8451064101000409]
- Specialized Research Fund for the Doctoral Program [111]
- State Forestry Administration [200804015]
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Cellulose, extracted from sugarcane bagasse, was successfully succinylated in ionic liquid 1-buty-3-methylimidazolium (BMIMCI) using 4-dimethylaminopyridine (DMAP) as a catalyst. Parameters investigated included the mass ratio of DMAP/succinic anhydride in a range from 0% to 15%, reaction time (from 30 to 120 min), reaction temperature (from 60 to 110 degrees C). The succinylated cellulosic derivatives had a degree of substitution (DS) ranging from 0.24 to 2.34. It was found that the DS of succinylated cellulosic derivatives using DMAP as a catalyst was higher than that without any catalyst under the same reaction conditions. The products were characterized by FT-IR, solid-state CP/MAS C-13 NMR, and thermal analysis. FT-IR and solid-state CP/MAS C-13 NMR spectra showed that succinoylation occurred at C-6, C-2 and C-3 positions. The thermal stability of the succinylated cellulose decreased upon chemical modification. (C) 2009 Elsevier Ltd. All rights reserved.
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