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
相关论文
共 9 条
[1]   BAND TEXTURES IN MESOMORPHIC (HYDROXYPROPYL)CELLULOSE SOLUTIONS [J].
ERNST, B ;
NAVARD, P .
MACROMOLECULES, 1989, 22 (03) :1419-1422
[2]   REFRACTIVE-INDEX OF A SHEARED CHOLESTERIC POLYMER [J].
GILLI, JM ;
LAIVINS, G ;
SIXOU, P .
LIQUID CRYSTALS, 1986, 1 (05) :491-497
[3]   TRANSIENT AND STEADY-STATE RHEOLOGY OF A LIQUID-CRYSTALLINE HYDROXYPROPYLCELLULOSE SOLUTION [J].
GRIZZUTI, N ;
CAVELLA, S ;
CICARELLI, P .
JOURNAL OF RHEOLOGY, 1990, 34 (08) :1293-1310
[4]  
GRIZZUTI N, 1991, RHEOL ACTA, V7, P71
[5]  
GUIDO S, 1990, LIQ CRYST, P279
[6]   BAND FORMATION IN SHEARED HPC SOLUTIONS - EFFECTS OF SAMPLE THICKNESS [J].
MARRUCCI, G ;
GRIZZUTI, N ;
BUONAURIO, A .
MOLECULAR CRYSTALS AND LIQUID CRYSTALS, 1987, 153 :263-269
[7]   CHOLESTERIC HYDROXYPROPYLCELLULOSE SOLUTIONS - MICROSCOPY AND SMALL-ANGLE LIGHT-SCATTERING [J].
MEETEN, GH ;
NAVARD, P .
JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS, 1988, 26 (02) :413-419
[8]   FORMATION OF BAND TEXTURES IN HYDROXYPROPYLCELLULOSE LIQUID-CRYSTALS [J].
NAVARD, P .
JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS, 1986, 24 (02) :435-442
[9]   SHEAR VELOCITY PROFILES IN (HYDROXYPROPYL)CELLULOSE SOLUTIONS [J].
PEUVREL, E ;
NAVARD, P .
MACROMOLECULES, 1990, 23 (22) :4874-4875
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