Van der Waals interactions in three-phase emulsions

  • Kayrod Madani
  • Stig Friberg
Stark Strukturierte Systeme
Part of the Progress in Colloid & Polymer Science book series (PROGCOLLOID, volume 65)


the stability of three-phase emulsions has been treated and the difference between the case of three liquids and two liquids and a liquid crystalline phase has been pointed out.

For the well known three liquid emulsions which remain close to the HLB-temperature the extremely low interfacial tensions is a main factor for the instability. The enhanced interfacial free energy at an undulated thein film is insufficient to counteract the enhanced Van der Waals potential.

The specific influence of a layered structure on the Van der Waals attraction potential was demonstrated by a comparison between potentials from a manylayered structure and from a mono-layered structure with average properties. The many-layered structure causes a far more pronounced reduction of the Van der Waals forces at the onset of coalescence than the mono-layered structure.


Emulsion Droplet Liquid Crystalline Phase Interfacial Free Energy Hamaker Constant Glycol Ether 
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Copyright information

© Dr. Dietrich Steinkopff Verlag GmbH & Co. KG 1978

Authors and Affiliations

  • Kayrod Madani
    • 1
  • Stig Friberg
    • 1
  1. 1.Chemistry Department, UMRRollaU.S.A.

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