Application of 1-Allyl-3-(1-butyl)imidazolium Chloride in the Synthesis of Cellulose Esters: Properties of the Ionic Liquid, and Comparison with Other Solvents

被引：30

作者：

Fidale, Ludmila C. ^{[1
]}

Possidonio, Shirley ^{[1
]}

El Seoud, Omar A. ^{[1
]}

机构：

[1] Univ Sao Paulo, Inst Chem, BR-05513970 Sao Paulo, Brazil

来源：

MACROMOLECULAR BIOSCIENCE | 2009年 / 9卷 / 08期

基金：

巴西圣保罗研究基金会;

关键词：

activation energy adsorption; cellulose acetate; cellulose butyrate; ionic Liquids (ILs); 1-allyl-3-(1-butyl)imidazolium chloride (AlBuImCl); DILUTE-SOLUTION PROPERTIES; RHEOLOGICAL PROPERTIES; BACTERIAL CELLULOSE; DISSOLUTION; DERIVATIVES; ACYLATION; ACETATE; POLYSACCHARIDES; SOLVATION; CHEMISTRY;

D O I：

10.1002/mabi.200900034

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

The ionic liquid (IL), 1-allyl-3-(1-butyl)imidazolium chloride (AlBuImCl), has been synthesized and its properties determined. Increase in the temperature increased its conductivity and decreased its density, polarity, and viscosity. Microcrystalline cellulose (MCC), dissolves in thisIL by heating at 80 degrees C; this did not affect its degree of polymerization, decreased its index of crystallinity (Ic), and changed in morphology after regeneration. Convenient acylation of MCC was achieved by using 50% excess anhydride at 80 degrees C, for 24 or 48 h for acetic and butyric anhydride, respectively. The composition of the mixed esters depended on the initial ratio of the anhydrides, and their order of addition.

引用

页码：813 / 821

页数：9

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