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Comparison of Structural Modification of Sugarcane Bagasse Cellulose Regenerated from Three Imidazolium-Based Ionic Liquids

文献类型： 外文期刊

作者： Cui, Lihong 1 ; Wei, Xiaoyi 1 ; Fu, Tiaokun 1 ; Chang, Gang 1 ; Tang, Bing 3 ; Feng, Qin 2 ;

作者机构： 1.Chinese Acad Trop Agr Sci, Agr Prod Proc Res Inst, Zhanjiang 524001, Peoples R China

2.Chinese Acad Trop Agr Sci, South Subtrop Crops Res Inst, Zhanjiang 524001, Peoples R China

3.Chinese Acad Trop Agr Sci, Spice & Beverage Res Inst, Wanning 571533, Peoples R China

关键词： Sugarcane bagasse;Cellulose;Ionic liquids;Comparison;Structure

期刊名称：PROCEEDINGS OF THE 2017 6TH INTERNATIONAL CONFERENCE ON ENERGY AND ENVIRONMENTAL PROTECTION (ICEEP 2017)

ISSN： 2352-5401

年卷期： 2017 年 143 卷

页码：

收录情况： SCI

摘要： Sugarcane bagasse cellulose (SBC) was dissolved in three imidazolium-based ionic liquids (ILs) [Emim]DEP, [Emim]Ac and [Bmim]Cl at the same conditions (1% mass loading, 110.). Among the three ILs, [Emim]DEP has the highest dissolution rate and regeneration yield of SBC. Both the original and regenerated SBC samples were characterized by X-ray diffraction, infrared spectroscopy, scanning electron microscopy and thermogravimetric analysis. The results showed that the crystal structure of SBC was rearranged from cellulose I to cellulose II after regeneration from all the three ILs, but different IL leads to a different degree of crystallinity index (CrI) reduction. The CrI of SBC regenerated from [Bmim]Cl was significantly decreased from 73.35% to 25.08%, which is the lowest in all samples. Surprisingly, the CrI value of regenerated SBC from [Emim]DEP was just a little higher than that of [Bmim]Cl, although the dissolution time of [Emim]DEP is much shorter than that of [Bmim]Cl. It was also found that the regenerated SBC from [Emim]DEP had better thermal stability when compared with the untreated and regenerated SBC from the other two ILs.

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