Rheological characteristics of aqueous solutions of an amphoteric guar gum derivative

被引：2
|
作者：
Zhou, JF
Zhang, LM [1 ]
Hui, PS
机构：
[1] Zhongshan Univ, Inst Polymer Sci, Guangzhou 510275, Peoples R China
[2] Econ Polymers & Chem Co USA, China Agcy Off, Guangzhou 510030, Peoples R China
来源：
ACTA PHYSICO-CHIMICA SINICA | 2003年 / 19卷 / 11期
关键词：
guar gum derivative; rheological property; pseudoplastic fluid; thixotropy; anti-polyelectrolyte solution behavior; zero shear viscosity;
D O I：
10.3866/PKU.WHXB20031120
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：
The rheological characteristics of aqueous solutions of an amphoteric guar gum derivative, namely E-AMPHO-S, were studied in terms of the effects of its concentration, added salts and temperature by means of a rotating rheometer. It was found that E-AMPHO-S solutions investigated behaved as non-Newtonian shear-thinning fluids. With the increase of E-AMPHO-S concentration from 0.1% to 2.0% (g . mL(-1)), the consistency coefficient increased while the viscosity behavior index decreased. The thixotropic response became stronger when E-AMPHO-S concentration was increased from 1.0% to 3.0% (g . mL(-1)). The obvious viscosity behavior of "anti-polyelectrolye solution" was observed in aqueous salt solutions containing calcium chloride. The zero shear viscosity (eta(0)) could be obtained by using Spencer-Dillon equation, and the temperature dependence of eta(0) could be expressed by a relation of the form of the Arrhenius equation.
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页码：1081 / 1084
页数：4
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