Colloid and Polymer Science

, Volume 271, Issue 5, pp 469–479

Preparation of monodisperse ellipsoidal polystyrene particles

  • C. C. Ho
  • A. Keller
  • J. A. Odell
  • R. H. Ottewill
Original Contributions

Abstract

A method is described for the preparation of monodisperse ellipsoidal particles of polystyrene in the colloidal size range. Monodisperse polystyrene particles were dispersed in a solution of polyvinyl alcohol. This dispersion was then allowed to form, by evaporation, a thin film of polyvinyl alcohol containing spherical polystyrene particles. Strips of this film were clamped into a metal frame, heated rapidly in an oil bath to 200°C and stretched to a predetermined extent in order to convert the spherical particles into ellipsoids; the film was then cooled. A wide range of axial ratios for a variety of initial particle sizes was obtained by this method.

Key words

Polystyrene polyvinylalcohol latices ellipsoidal particles 

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Copyright information

© Steinkopff-Verlag 1993

Authors and Affiliations

  • C. C. Ho
    • 1
  • A. Keller
    • 2
  • J. A. Odell
    • 2
  • R. H. Ottewill
    • 1
  1. 1.School of ChemistryUniversity of BristolBristolUK
  2. 2.H.H. wills Physics LaboratoryUniversity of BristolUK
  3. 3.Department of ChemistryUniversity of MalayaKuala LumpurMalaysia

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