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Dispersion of Zirconia in the Presence of Dolapix PC75

Biswas, Modhura and Raichur, Ashok M (2010) Dispersion of Zirconia in the Presence of Dolapix PC75. In: Journal of Dispersion Science and Technology, 31 (9). pp. 1173-1177.

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The effect of Dolapix PC75 on the electrokinetic and rheological behavior of nano zirconia particles is presented here. The effect of pH, concentration of dispersant, and solids loading on zeta-potential and rheological behavior was studied. Upon interaction with the dispersant, the iso-electric point of zirconia changed and the surface became more negative with increasing concentration of dispersant, suggesting a strong interaction. Maximum charge was obtained in the presence of about 200ppm of Dolapix. Rheological tests at pH 7 showed that the zirconia suspension is viscous at high solids loading and addition of the dispersant decreased the viscosity substantially especially at high solids loading (50wt%). Sedimentation tests confirmed that Dolapix PC75 is a good dispersant for zirconia particles at pH values of 7 and above.

Item Type: Journal Article
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Additional Information: Copyright of this article belongs to Taylor and Francis Group.
Keywords: Dispersion; Dolapix; rheological behavior; zirconia.
Department/Centre: Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited: 15 Sep 2010 09:48
Last Modified: 19 Sep 2010 06:16
URI: http://eprints.iisc.ernet.in/id/eprint/32132

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