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Investigation into the Heterocoagulation of Two-Component Disperse Systems Containing Nanosized and Submicron Particles with Different Degrees of Hydrophilicity

  • Proceedings of the Topical Meeting of the European Ceramic Society “Nanoparticles, Nanostructures, And Nanocomposites”
  • (St. Petersburg, Russia, July 5–7, 2004)
  • Published:
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Abstract

The aggregate stability of binary mixtures that contain two hydrophobic components [SiO2-FeOOH, Au-Fe(OH)3], hydrophobic and hydrophilic components (SiO2-ZrO2, SiO2-CeO2, FeOOH-natural diamond), and two hydrophilic components (CeO2-natural diamond, ZrO2-natural diamond) is investigated by photometry and ultramicroscopy over wide ranges of KCl concentrations and pH. It is shown that the stability of binary mixtures containing one or two hydrophobic components can be qualitatively explained in terms of the Derjaguin theory of heterocoagulation of hydrophobic colloids. The stability of mixed binary sols is determined by the stability of the component with a dominant number concentration of particles. The heteroadagulation stabilization due to the ionic electrostatic or structural stability ratio of the nanosized component in the mixture is revealed.

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Authors and Affiliations

  1. Grebenshchikov Institute of Silicate Chemistry, Russian Academy of Sciences, ul. Odoevskogo 24/2, St. Petersburg, 199155, Russia

    E. V. Golikova

  2. St. Petersburg Technological University of Plant Polymers, ul. Ivana Chernykh 4, St. Petersburg, 198095, Russia

    Yu. M. Chernoberezhskii

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  1. E. V. Golikova
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  2. Yu. M. Chernoberezhskii
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Original Russian Text Copyright © 2005 by Fizika i Khimiya Stekla, Golikova, Chernoberezhskii.

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Golikova, E.V., Chernoberezhskii, Y.M. Investigation into the Heterocoagulation of Two-Component Disperse Systems Containing Nanosized and Submicron Particles with Different Degrees of Hydrophilicity. Glass Phys Chem 31, 280–290 (2005). https://doi.org/10.1007/s10720-005-0057-1

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