Phase transitions in liquid crystalline solutions of hydroxypropyl cellulose under deformation

被引：1

作者：

Rusinova, E. V. ^{[1
]}

Vshivkov, S. A. ^{[1
]}

Alekseeva, M. S. ^{[1
]}

机构：

[1] Ural State Univ, Ekaterinburg 620083, Russia

来源：

POLYMER SCIENCE SERIES B | 2007年 / 49卷 / 1-2期

基金：

俄罗斯基础研究基金会;

关键词：

Phase Transition; Shear Rate; Polymer Science Series; Phase Transition Temperature; Boundary Curve;

D O I：

10.1134/S1560090407010071

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Phase transitions and the physical state of the hydroxypropyl cellulose-dimethylacetamide system under static conditions and in a shear field were studied by the cloud-point and polarized optical microscopy techniques with a polarization-photoelectric setup and a modified plasticorder. The deformation of solutions leads to a change in their structure and elevation of liquid-crystalline phase formation temperatures, a result that is due to the additional orientation of macromolecules in the flow direction. The ability of macromolecules to be oriented in a shear field decreases with an increase in the molecular mass of the polymer. The influence of deformation on phase transitions in hydroxypropyl cellulose solutions is nonmonotonic in character.

引用

页码：26 / 29

页数：4

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[1] Phase transitions in liquid crystalline solutions of hydroxypropyl cellulose under deformation
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