Solution states of cellulose in selected direct dissolution agents

被引：38

作者：

Kosan, Birgit ^{[1
]}

Schwikal, Katrin ^{[1
]}

Meister, Frank ^{[1
]}

机构：

[1] Thuring Inst Textil & Kunststoff Forsch eV, D-07407 Rudolstadt, Germany

来源：

CELLULOSE | 2010年 / 17卷 / 03期

关键词：

Anisotropic properties; Cellulose dissolution; Ionic liquid; Phase transition; Polarised light microscopy; Rheological characterisation; Solution state; IONIC LIQUIDS; FIBERS;

D O I：

10.1007/s10570-010-9402-1

中图分类号：

TB3 [工程材料学]; TS [轻工业、手工业、生活服务业];

学科分类号：

0805 ; 080502 ; 0822 ;

摘要：

Properties of cellulose solutions in different direct dissolving liquids such as N-methylmorpholine-N-oxide and ionic liquids with varied cations and anions were investigated. The effects of different cations and anions of the used ionic liquids on the solution state were studied on the basis of the rheological characteristics of the resulting polymer solutions. The influence of these components is discussed in terms of zero shear viscosities, master curves with storage and loss moduli as well as complex viscosities using comparable molar ratios between cellulose and solvent and comparable polymer concentrations. Furthermore anisotropic properties of highly concentrated cellulose solutions were determined by means of polarised light microscopy and rheological methods subjected to the used solvent and variation of the polymer concentration as well as the temperature.

引用

页码：495 / 506

页数：12

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