Droplet microemulsions: Determination of the bending elastic constants by photon correlation spectroscopy

  • T. Hellweg
  • D. Langevin
Conference paper
Part of the Progress in Colloid & Polymer Science book series (PROGCOLLOID, volume 104)


The bending elasticity of a surfactant film at the interface oil-water in a microemulsion system can be described by the spontaneous curvature and two elastic constants k and ¯k In this study we derive the sum 2k + k for the system n-octane/ C10E5/water from the polydispersity of the relaxation rate distribution found by a CONTIN analysis of the intensity correlation functions. A value of 1.2/kT is found.

Key words

Microemulsion size polydispersity dynamic light scattering surfactant film bending elasticity 


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Copyright information

© Steinkopff Verlag 1997

Authors and Affiliations

  • T. Hellweg
    • 1
  • D. Langevin
    • 1
  1. 1.Centre de Recherche Paul PascalCNRSPessacFrance

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