Kinetics of bridging flocculation.

E.G.M. Pelssers, M.A. Cohen Stuart, G.J. Fleer

    Research output: Contribution to journalArticleAcademicpeer-review

    100 Citations (Scopus)


    From experimental data on the kinetics of flocculation of polystyrene latex by means of poly(ethylene oxide) it is deduced that the well known classical aggregation theory of von Smoluchowski does not apply to bridging flocculation. A new kinetic model is therefore developed. It has as a key element the flattening of the polymer molecules with time, by which they lose the ability to form bridges. We take this into account by introducing a characteristic time of reconformation. The only other parameter is a minimum coverage of active polymer chains per particle, necessary for bridge formation. Using reasonable values for these two parameters, we find that the model describes the experimental data very well.
    Original languageEnglish
    Pages (from-to)1355-1361
    JournalJournal of the Chemical Society. Faraday transactions : physical chemistry & chemical physics
    Publication statusPublished - 1990

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