Electrorheological properties of chitosan suspension

被引：30

作者：

Choi, US ^{[1
]}

机构：

[1] Korea Inst Sci & Technol, Tribol Ctr, Seoul, South Korea

来源：

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 1999年 / 157卷 / 1-3期

关键词：

electrorheological fluid; Newtonian fluid; Bingham fluid; chitosan suspension; ER response; polarization model; relative polarizability; polar group;

D O I：

10.1016/S0927-7757(99)00051-5

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Electrorheological (ER) properties of the chitosan suspension were investigated by varying electric fields, volume fractions, shear rates, and temperatures. Chitosan suspension showed the ER response (Bingham fluid behavior) upon application of the electric field due to the polarizability of the branched amino polar group of the chitosan particles. The shear stress exhibited a linear dependence on the volume fraction and the square of the field strength. The Arrhenius plot of the data revealed an activation energy of about 0.6 kcal mol(-1). On the basis of the experimental results, chitosan suspension correlated with the polarization model and found to be an ER fluid. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：193 / 202

页数：10

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