文献类型：期刊文献

英文题名：Dissolution of Bamboo Hemicellulose in 1-Butyl-3-Methylimidazolium Halide-based Ionic Liquids

作者：Yuan, Lin[1,2];Peng, Hong[1,3];Hu, Lifang[1,3];Yu, Ruobing[4];Peng, Wenyi[2];Ruan, Roger[1,3];Xia, Qi[1,3];Zhang, Yu[1,3];Liu, Aihong[5]

机构：[1]Nanchang Univ, Engn Res Ctr Biomass Convers, Minist Educ, Nanchang 330047, Jiangxi, Peoples R China;[2]Nanchang Univ, Sch Mat Sci & Engn, Nanchang 330031, Jiangxi, Peoples R China;[3]Nanchang Univ, State Key Lab Food Sci & Technol, Nanchang 330031, Jiangxi, Peoples R China;[4]East China Univ Sci & Technol, Sch Mat Sci & Engn, Shanghai 200237, Peoples R China;[5]Nanchang Univ, Ctr Anal & Testing, Nanchang 330047, Jiangxi, Peoples R China

年份：2019

卷号：14

期号：1

起止页码：2097

外文期刊名：BIORESOURCES

收录：;EI(收录号：20190706501095);WOS:【SCI-EXPANDED(收录号:WOS:000459494400144)】；

基金：This work was supported by the Natural Science Foundation of China (21666022) and the Natural Science Foundation from the Ministry of Education of Jiangxi Province of China (GJJ150189).

语种：英文

外文关键词：Hemicellulose; Ionic liquid; Solubility; Hydrogen bond; NMR technique; Interaction

摘要：Understanding the dissolution of hemicellulose in ionic liquids (ILs) is important in order to explore efficient utilization of ILs for fractionating lignocellulose and extracting hemicellulose. In this study, three ILs, namely 1-butyl-3-methylimidazolium chloride (BmimCl), 1-butyl-3-methylimidazolium bromide (BmimBr), and 1-butyl-3-methylimidazolium iodide (Bmiml), were used as solvents to dissolve bamboo hemicellulose over the temperature range of 80 degrees C to 150 degrees C. Representative hemicellulose with a solubility higher than 9.0 g/100 g IL was regenerated and characterized. The interaction between the hemicellulose and ILs was evaluated using carbon-13 nuclear magnetic resonance. The results showed that the solubility of hemicellulose in the ILs was in the following order: BmimCI > BmimBr > Bmiml. Though moderate degradation of the hemicellulose possibly occurred during dissolution, the main chain of the hemicellulose was almost unchanged. The enhanced solubility of the hemicellulose was because of the formation of hydrogen bonds between the hydroxyl proton of the hemicellulose and anion of the ILs.