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Citation: Zhou Jian-Fang, Zhang Li-Ming, Peter S. Hui. Rheological Characteristics of Aqueous Solutions of an Amphoteric Guar Gum Derivative[J]. Acta Physico-Chimica Sinica, ;2003, 19(11): 1081-1084. doi: 10.3866/PKU.WHXB20031120 shu

Rheological Characteristics of Aqueous Solutions of an Amphoteric Guar Gum Derivative

1.
Institute of Polymer Science, Zhongshan University, Guangzhou　510275; China Agency Office of Economy Polymers ＆ Chemicals Company of USA, Guangzhou　510030

Received Date: 25 April 2003
Available Online: 15 November 2003

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 (η0) could be obtained by using Spencer-Dillon equation, and the temperature dependence of η0 could be expressed by a relation of the form of the Arrhenius equation.
- Guar gum derivative;Rheological property;Pseudoplastic fluid;　Thixotropy;Anti-polyelectrolyte solution behavior;Zero shear viscosity
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