High-intensity ultrasound irradiated modification of sugarcane bagasse cellulose in an ionic liquid

被引:29
|
作者
Ma, Sen [1 ]
Xue, Xiao-li [1 ]
Yu, Shu-juan [1 ]
Wang, Zhong-he [1 ]
机构
[1] S China Univ Technol, Coll Light Ind & Food Sci, Guangzhou 510640, Guangdong, Peoples R China
基金
中国国家自然科学基金;
关键词
Sugarcane bagasse; Cellulose; Ultrasound; Ionic liquid; Glutaration; HOMOGENEOUS SULFATION; ACTIVATED CARBON; FLY-ASH; FILMS; EQUILIBRIUM; REMOVAL;
D O I
10.1016/j.indcrop.2011.06.023
中图分类号
S2 [农业工程];
学科分类号
0828 ;
摘要
This current work is concerned with the glutarylation of sugarcane bagasse cellulose in ionic liquid 1-butyl-3-methylimidazolium chloride by ultrasound irradiation without catalyst. The degree of substitution ranging from 0.22 to 1.20 was obtained in one-step homogeneous modification, which increased with ultrasound irradiation time, temperature, and the molar ratio of glutaric anhydride/anhydroglucose unit in cellulose. The structural characterization of the glutarylated cellulose was carried out by using FT-IR and CP/MAS C-13 NMR and the results showed that the glutarylation reaction occurred. The thermal stability of the glutarylated cellulose decreased upon chemical modification. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码:135 / 139
页数:5
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