RHEOLOGICAL PROPERTIES OF SILICA SUSPENSIONS IN AQUEOUS CELLULOSE DERIVATIVE SOLUTIONS

被引：4

作者：

KAWAGUCHI, M

RYO, Y

机构：

[1] Department of Chemistry for Materials, Faculty of Engineering, Mie University, Tsu, Mie, 515

来源：

CHEMICAL ENGINEERING SCIENCE | 1993年 / 48卷 / 02期

关键词：

RHEOLOGY; SILICA SUSPENSION; HPMC; SHEAR STRESS; SHEAR RATE; STORAGE MODULUS; LOSS MODULUS;

D O I：

10.1016/0009-2509(93)80024-K

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The rheology of the silica suspensions in aqueous solutions of hydroxypropylmethylcellulose (HPMC) was investigated as a function of silica content, HPMC concentration, and HPMC molecular weight. Some silica suspensions showed rheopexy behavior after the silica suspensions were subjected to preshearing at the highest shear rate. All silica suspensions showed non-Newtonian flow. For most silica suspensions there were some frequency ranges where the G'' value exceeds the G' value. On the other hand, for the silica suspensions with the highest silica contents in the solution of high molecular weight HPMC the G' values were larger than the G'' values in the entire frequency range.

引用

页码：393 / 400

页数：8

共 7 条

[1]

Iler R. K., 1978, CHEM SILICA

[2] MEASUREMENTS OF MOLECULAR-WEIGHT AND MOLECULAR-WEIGHT DISTRIBUTION FOR WATER-SOLUBLE CELLULOSE DERIVATIVES USED IN THE FILM COATING OF TABLETS [J].