NORMAL STRESS DIFFERENCES IN LIQUID-CRYSTALLINE HYDROXYPROPYLCELLULOSE SOLUTIONS

被引：32

作者：

BAEK, SG ^{[1
]}

MAGDA, JJ ^{[1
]}

CEMENTWALA, S ^{[1
]}

机构：

[1] UNIV UTAH,DEPT MAT SCI & ENGN,SALT LAKE CITY,UT 84112

来源：

JOURNAL OF RHEOLOGY | 1993年 / 37卷 / 05期

关键词：

D O I：

10.1122/1.550404

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

All three viscometric functions are investigated as a function of shear rate for lyotropic solutions of hydroxypropyl cellulose (HPC). Through the use of m-cresol as the solvent, it was possible to investigate liquid crystal solutions at lower polymer volume fractions than have previously been studied for HPC. We find no evidence of a three-region viscosity curve, as has been widely reported for HPC at higher polymer volume fractions. The first and second normal stress differences (N1 and N2, respectively) both change sign twice as the shear rate is varied.

引用

页码：935 / 945

页数：11

共 34 条

[1] MESOPHASE FORMATION AND CHAIN RIGIDITY IN CELLULOSE AND DERIVATIVES .2. (HYDROXYPROPYL)CELLULOSE IN DICHLOROACETIC ACID [J].