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VELOCITY PROFILES IN SIMPLE SHEAR-FLOW OF LIQUID-CRYSTALLINE POLYMERS

被引：6
作者：
SARDI, I
GRIZZUTI, N
RITI, JB
THOELEN, E
VANRUSSELT, L
NAVARD, P
机构：
[1] ECOLE NATL SUPER MINES,CTR MISE FORME MAT,CNRS,UA 1374,BP 207,F-06904 SOPHIA ANTIPOLIS,FRANCE
[2] UNIV NAPOLI FEDERICO II,DIPARTIMENTO INGN CHIM,I-80125 NAPLES,ITALY
来源：
LIQUID CRYSTALS | 1992年 / 12卷 / 04期
关键词：
D O I：
10.1080/02678299208029095
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The velocity profiles of isotropic and anisotropic solutions of hydroxypropylcellulose in water have been measured by a tracer method. The velocity profile is the usual linear one for steady state experiments and also for transient experiments if a short waiting time (less than 3 hours) is left between loading and the experiment. For long waiting times (more than 12 hours), the profile is S-shaped. This could be due to the establishment of a cholesteric superstructure.
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页码：593 / 601
页数：9
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