Dissolution enthalpies of cellulose in ionic liquids

被引：35

作者：

Parviainen, Helena ^{[1
]}

Parviainen, Arno ^{[2
]}

Virtanen, Tommi ^{[1
]}

Kilpelainen, Ilkka ^{[2
]}

Ahvenainen, Patrik ^{[3
]}

Serimaa, Ritva ^{[3
]}

Gronqvist, Stina ^{[4
]}

Maloney, Thaddeus ^{[5
]}

Maunu, Sirkka Liisa ^{[1
]}

机构：

[1] Univ Helsinki, Dept Chem, Polymer Chem Lab, FI-00014 Helsinki, Finland

[2] Univ Helsinki, Dept Chem, Organ Chem Lab, FI-00014 Helsinki, Finland

[3] Univ Helsinki, Dept Phys, FI-00014 Helsinki, Finland

[4] VTT Tech Res Ctr Finland, FI-02044 Espoo, Finland

[5] Aalto Univ, Sch Chem Technol, Dept Forest Prod Technol, Aalto 00076, Finland

来源：

CARBOHYDRATE POLYMERS | 2014年 / 113卷

关键词：

Ionic liquid; Cellulose; Fibre dissolution; Differential scanning calorimetry; FREE-FLOATING COTTON; 1-ETHYL-3-METHYLIMIDAZOLIUM ACETATE; STARCH DISSOLUTION; WOOD FIBERS; WATER; SYSTEMS; GELATINIZATION; CRYSTALLINITY; SOLUBILITY; SOLVENTS;

D O I：

10.1016/j.carbpol.2014.07.001

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

In this work, interactions between cellulose and ionic liquids were studied calorimetrically and by optical microscopy. Two novel ionic liquids (1,5-Diazabicyclo[4.3.0]non-5-enium propionate and N-methyl-1,5-diazabicyclo[4.3.0]non-5-enium dimethyl phosphate) and 1-ethyl-3-methylimidazolium acetate-water mixtures were used as solvents. Optical microscopy served in finding the extent of dissolution and identifying the dissolution pattern of the cellulose sample. Calorimetric studies identified a peak relating to dissolution of cellulose in solvent. The transition did, however, not indicate complete dissolution, but rather dissolution inside fibre or fibrils. This method was used to study differences between four cellulose samples with different pretreatment or origins. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：67 / 76

页数：10

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