Homogeneous Modification of Cellulose in Ionic Liquid with Succinic Anhydride Using N-Bromosuccinimide as a Catalyst

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• 作者：Chuan-Fu Liu^† ; ; Ai-Ping Zhang^† ; ; Wei-Ying Li^† ; ; Feng-Xia Yue^† ; ; Run-Cang Sun*^&#8225 ;
• 刊名：Journal of Agricultural and Food Chemistry
• 出版年：2009
• 出版时间：March 11, 2009
• 年：2009
• 卷：57
• 期：5
• 页码：1814-1820
• 全文大小：215K
• 年卷期：v.57,no.5(March 11, 2009)
• ISSN：1520-5118

文摘

The homogeneous chemical modification of cellulose with succinic anhydride was investigated in a solvent system containing 1-butyl-3-methylimidazolium chloride ionic liquid and dimethylsulfoxide using N-bromosuccinimide (NBS) as a catalyst. The results showed that the degree of substitution of the succinylated cellulosic samples, in the range of 0.24−2.31, noticeably increased as compared with the products without any catalysts, indicating that NBS was a novel efficient catalyst for cellulose succinoylation in ionic liquids. Fourier transform infrared and solid-state cross-polarization/magic angle spinning ¹³C NMR spectroscopies also provided evidence of succinoylation reaction. The results indicated that the reaction of hydroxyl groups at C-6, C-2, and C-3 positions in cellulose occurred. The thermal stability of the succinylated cellulose was found to decrease upon chemical modification.