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Proceedings of the National Academy of Sciences of Belarus, Chemical Series

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GRANULOMETRIC COMPOSITION AND SEDIMENTATION STABILITY OF WATER DISPERSION POLYSILOXANE–MINERAL POWDER SYSTEMS

Abstract

Stability of water dispersions of a polyorganosiloxane and TiO2 or mica both in presence of surfactants and without them has been studied at pH 6.7 and 8.7 by nephelometry and granulometry. Aggregate stability of latex-TiO2 system increases with disperse phase concentration, while decreasing for the latex-mica system. Introduction of anionic and nonionic surfactants into mixed dispersions (pH 6.7) leads to increase. Increase of dispersant pH significantly improves dispersancy of powders in the latex without dispersing agent. 

About the Authors

I. P. Kazhuro
Institute of General and Inorganic Chemistry of the National Academy of Sciences of Belarus
Belarus
Ph. D. (Chemistry), Senior Research Associate


V. D. Koshevar
Institute of General and Inorganic Chemistry of the National Academy of Sciences of Belarus
Belarus
D. Sc. (Chemistry), Professor, Head of the Laboratory of Chemistry of Coating and Binding Materials


N. A. Simash
Institute of General and Inorganic Chemistry of the National Academy of Sciences of Belarus
Belarus
Junior Researcher


References

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ISSN 1561-8331 (Print)
ISSN 2524-2342 (Online)