Wetting behavior in colloid-polymer mixtures at different substrates

W.K. Wijting, N.A.M. Besseling, M.A. Cohen Stuart

Research output: Contribution to journalArticleAcademicpeer-review

27 Citations (Scopus)

Abstract

We present experimental observations on wetting phenomena in depletion interaction driven, phase separated colloidal dispersions. The contact angle of the colloidal liquid-gas interface at a solid substrate was determined for a series of compositions. Upon approach to the critical point, a transition occurs from partial to complete wetting. The interaction with the substrate was manipulated by modifying the substrate with a polymer. In that case, a transition from partial to complete drying is observed upon approach to the critical point
Original languageEnglish
Pages (from-to)10565-10570
JournalThe Journal of Physical Chemistry Part B: Condensed Matter, Materials, Surfaces, Interfaces & Biophysical
Volume107
Issue number38
DOIs
Publication statusPublished - 2003

Keywords

  • sterically-stabilized particles
  • phase-behavior
  • depletion flocculation
  • silica dispersions
  • light-scattering
  • separation
  • dynamics
  • spheres

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