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01-10-2007 | Issue 5/2007

Cellulose 5/2007

Viscosity properties of sodium carboxymethylcellulose solutions

Journal:
Cellulose > Issue 5/2007
Authors:
Xiao Hong Yang, Wei Ling Zhu

Abstract

Through viscosity measurements, concentration and temperature dependences of viscosity of sodium carboxymethylcellulose (CMC) solution were recorded. Effects of glycerin, mechanical shearing and several electrolytes on the CMC solution were also determined. Results showed that the viscosity dependence on concentration obeyed the Huggins and Kramer equation, the dependence on temperature complied with the Arrhenius equation. CMC chain could synergize with glycerin, konjac glucomannan (KGM), and aluminum sulfate 18-hydrate. Sodium chloride, hydrochloric acid, and calcium dichloride reduced the viscosity of the CMC solution. By suggesting the ion-binding and hydrogen bond as the major form of the electrostatic interaction in the CMC solution, the synergistic and pseudoplastic phenomena as well as the maximum over stirring time were reasonably explained.

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