Dissolution and recovery of cellulose from 1-butyl-3-methylimidazolium chloride in presence of water

被引：39

作者：

Iguchi, Masayuki ^{[1
]}

Aida, Taku Michael ^{[1
,2
]}

Watanabe, Masaru ^{[1
]}

Smith, Richard L., Jr. ^{[1
,2
]}

机构：

[1] Tohoku Univ, Grad Sch Engn, Res Ctr Supercrit Fluid Technol, Aoba Ku, Sendai, Miyagi 9808579, Japan

[2] Tohoku Univ, Grad Sch Environm Studies, Aoba Ku, Sendai, Miyagi 9808579, Japan

来源：

CARBOHYDRATE POLYMERS | 2013年 / 92卷 / 01期

关键词：

Cellulose; Ionic liquid; Water; Degree of polymerization; Cellulose II; RHEOLOGICAL PROPERTIES; CRYSTALLINE-STRUCTURE; IONIC LIQUIDS; SOLVENT; FILMS;

D O I：

10.1016/j.carbpol.2012.09.021

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

The dissolution and recovery of microcrystalline cellulose from 1-butyl-3-methylimidazolium chloride, [bmlm][CI], were studied. At 90 degrees C and 5 h dissolution time, the regenerated cellulose could be recovered above 80 wt% with a less than 10% decrease in the value of the viscosity-average degree of polymerization, DPv, regardless of water content. Recovery ratio and DPv, of regenerated cellulose at 120 degrees C decreased with time regardless of water content. The regenerated cellulose after dissolution at 120 degrees C for 10 h regardless of water content had cellulose II structure. Regenerated cellulose at short dissolution times or low temperature had high amorphous content. Both [bmlm][CI] and [bmlm][CI] with water act as a non-derivatizing solvent for microcrystalline cellulose at 90 degrees C, and as a derivatizing solvent at 120 degrees C. The main effect of added water on the dissolution of cellulose at high temperature was the promotion of cello-oligosaccharide and levoglucosan formation. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：651 / 658

页数：8

共 29 条

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