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Aggregation kinetics of monodisperse silica sol in aqueous NaCl solutions

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Abstract

Aggregation kinetics of monodisperse silica sol (with particle size of 250 nm) in aqueous NaCl solutions at pH 2.0 and 3.0 were studied by the method of flow ultramicroscopy. Slow sol coagulation was found to proceed according to a barrierless mechanism in subsequent potential minimum, caused by the predominance of attraction dispersion forces over the forces of structure repulsion at relatively large distances between particles.

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Authors and Affiliations

  1. St. Petersburg State University, Universitetskii pr. 26, Staryi Peterhof, St. Petersburg, Russia

    N. A. Novikova & E. V. Golikova

  2. Kirov Military Medical Academy of Russian Federation Defense Ministry, ul. Lebedeva 6, St. Petersburg, 19000, Russia

    R. S. Bareeva

  3. St. Petersburg State Technology University of Plant Polymers, ul. Ivana Chernykh 4, St. Petersburg, 198095, Russia

    Yu. M. Chernoberezhskii

Authors
  1. N. A. Novikova
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  2. E. V. Golikova
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  3. R. S. Bareeva
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  4. Yu. M. Chernoberezhskii
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Correspondence to E. V. Golikova.

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Original Russian Text © N.A. Novikova, E.V. Golikova, R.S. Bareeva, Yu.M. Chernoberezhskii, 2013, published in Fizika i Khimiya Stekla.

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Novikova, N.A., Golikova, E.V., Bareeva, R.S. et al. Aggregation kinetics of monodisperse silica sol in aqueous NaCl solutions. Glass Phys Chem 39, 390–397 (2013). https://doi.org/10.1134/S1087659613040147

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  • DOI: https://doi.org/10.1134/S1087659613040147

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