Influence of colloidal interactions on pigment coating layer structure formation

A Sand, Martti Toivakka, T Hjelt

    Tutkimustuotos: LehtiartikkeliArtikkeliTieteellinenvertaisarvioitu

    9 Sitaatiot (Scopus)

    Abstrakti

    The consolidation of pigment coating layers was simulated using a three-dimensional particle dynamics model. The model included hydrodynamic interactions as well as colloidal force models and the Brownian motion. The impact of various colloidal model parameters on the z-direction solids profile development and coating layer thickness was investigated. Also, the influence of continuous (liquid) phase viscosity was tested. Particle systems resembling a polydisperse ground calcium carbonate (GCC) distribution were studied. Results show that a lower particle surface potential on pigments increased the thickness of the coating layer, while the electrostatic double layer thickness influenced the internal coating structure. An increased viscosity of the continuous phase slowed the consolidation down, but did not have a significant impact on the final microstructure. The work contributes to the understanding of the influence of colloidal system properties on the consolidation and structure development of coating layers. The results may aid in the understanding of the impact of chemical additives on coating layer structure formation.
    AlkuperäiskieliEi tiedossa
    Sivut394–401
    Sivumäärä8
    JulkaisuJournal of Colloid and Interface Science
    Vuosikerta332
    Numero2
    DOI - pysyväislinkit
    TilaJulkaistu - 2009
    OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

    Keywords

    • Colloidal interactions
    • Consolidation
    • DLVO
    • Dynamics
    • Pigment coating
    • Solids structure
    • Suspension

    Viittausmuodot