Dielectric relaxation of microemulsions

  • M. Camardo
  • M. D’Angelo
  • D. Fioretto
  • G. Onori
  • L. Palmieri
  • A. Santucci
Microemulsions
First Online:
Part of the Progress in Colloid & Polymer Science book series (PROGCOLLOID, volume 100)

Abstract

The complex permittivity of AOT/H2O/CCl4 and AOT/H2O/n-heptane microemulsions has been measured by a frequency domain coaxial techniques in the range 0.02/20 GHz as a function of the molar ratio [H2O]/[AOT] (W). A relaxation phenomenon was observed whose behavior vs. W has been interpreted, in the dilute limit, in terms of two coexisting mechanisms: the reorientation of the whole micellar aggregate and the “free” rotational diffusion of the completely hydrated AOT ion pairs.

Key words

AOT dielectric relaxation microemulsions IR spectra 
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Copyright information

© Dr. Dietrich Steinkopff Verlag GmbH & Co. KG 1996

Authors and Affiliations

  • M. Camardo
    • 1
  • M. D’Angelo
    • 1
  • D. Fioretto
    • 1
  • G. Onori
    • 1
  • L. Palmieri
    • 1
  • A. Santucci
    • 1
  1. 1.Dipartimento di FisicaUniversitá di PerugiaPerugiaItaly

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