Kinetics of bridging flocculation.

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

    Research output: Contribution to journalArticleAcademicpeer-review

    97 Citations (Scopus)

    Abstract

    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
    Volume86
    DOIs
    Publication statusPublished - 1990

    Fingerprint

    Flocculation
    Polymers
    Kinetics
    kinetics
    polymers
    flattening
    ethylene oxide
    latex
    Polyethylene oxides
    polystyrene
    Agglomeration
    Molecules
    molecules
    styrofoam

    Cite this

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    title = "Kinetics of bridging flocculation.",
    abstract = "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.",
    author = "E.G.M. Pelssers and {Cohen Stuart}, M.A. and G.J. Fleer",
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    Kinetics of bridging flocculation. / Pelssers, E.G.M.; Cohen Stuart, M.A.; Fleer, G.J.

    In: Journal of the Chemical Society. Faraday transactions : physical chemistry & chemical physics, Vol. 86, 1990, p. 1355-1361.

    Research output: Contribution to journalArticleAcademicpeer-review

    TY - JOUR

    T1 - Kinetics of bridging flocculation.

    AU - Pelssers, E.G.M.

    AU - Cohen Stuart, M.A.

    AU - Fleer, G.J.

    PY - 1990

    Y1 - 1990

    N2 - 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.

    AB - 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.

    U2 - 10.1039/ft9908601355

    DO - 10.1039/ft9908601355

    M3 - Article

    VL - 86

    SP - 1355

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    JO - Journal of the Chemical Society. Faraday transactions : physical chemistry & chemical physics

    JF - Journal of the Chemical Society. Faraday transactions : physical chemistry & chemical physics

    SN - 0956-5000

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