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Stability of Polymer–Monomer Particles of Synthetic Latexes

  • Macromolecular Compounds and Polymeric Materials
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Abstract

The presence of “living” macroradicals in the volume of a polymer–monomer particle may be one of the factors responsible for the loss of the aggregative stability of latexes. If the adsorption protection of a polymer–monomer particle is insufficient, high content of “living” macroradicals leads to gelation in the latex in the course of storage. Correlation between the latex life time, hydration of nonionic surfactant molecules in the adsorption layer of a polymer–monomer particle, and extent of the action of the macroradicals was determined. Naphthalenesulfonic dispersing agents enhance the stability of latex systems in the step of polymerization and distillation of the monomers owing to a decrease in the critical micelle concentration of the emulsifier, to extension of the micellar period of the polymerization, to an increase in the degree of saturation of polymer–monomer particles, and to an increase in the probability of macroradical recombination in the volume of a polymer–monomer particle. With an increase in the degree of polycondensation of naphthalene-containing dispersing agents, their surface activity increases, whereas the ability to support the aggregative stability of latexes decreases.

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Authors and Affiliations

  1. Lebedev Research Institute of Synthetic Rubber, St. Petersburg, 198035, Russia

    I. I. Kraynik, V. N. Beresnev, L. V. Agibalova & A. V. Kurova

Authors
  1. I. I. Kraynik
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  2. V. N. Beresnev
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  3. L. V. Agibalova
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  4. A. V. Kurova
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Corresponding author

Correspondence to I. I. Kraynik.

Additional information

Original Russian Text © I.I. Kraynik, V.N. Beresnev, L.V. Agibalova, A.V. Kurova, 2018, published in Zhurnal Prikladnoi Khimii, 2018, Vol. 91, No. 10, pp. 1449−1461.

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Kraynik, I.I., Beresnev, V.N., Agibalova, L.V. et al. Stability of Polymer–Monomer Particles of Synthetic Latexes. Russ J Appl Chem 91, 1642–1653 (2018). https://doi.org/10.1134/S1070427218100117

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  • DOI: https://doi.org/10.1134/S1070427218100117

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