Archives of Pharmacal Research
- Volume 8 Issue 2
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- Pages.91-98
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- 1985
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- 0253-6269(pISSN)
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- 1976-3786(eISSN)
Effect of Electrolytes on Rheological Properties of Young-Il Bentonite Suspension
- Shin, Wha-Woo (College of pharmacy, Won-Kwang University) ;
- Lee, Kwang-Pyo (College of Pharmacy, Chung-Ang University)
- Published : 1985.06.01
Abstract
Dependence of the flow behavior of aqueous suspension of Young-Il bentonite on the concentration and the type of electrolytes was studied. Viscosity measurements were made was Rion Viscotester, using No. 3 rotor at 62.5 R. P. M. at 25.deg.C. As electrolyte concentration increased, the apparent viscosity was observed to increase. Changes in viscosity were in general agreement with predicted results based on the Hofmeister sequence and the Schulze-Hardy rule. The observed electrolyte effect on the apparent viscosity was discussed in terms of the Verwey-Overbeek theory.
Keywords
- Young-il bentonite-montmorillonite;
- Flocculation by electrolytes-monovalent cations;
- divalent cations;
- multivalent cations;
- anions;
- Rheological properties thixotropy;
- Schulze-Hardy rule;
- Hofmeister series;
- Verwey-Overbeek theory