Dielectric relaxation of microemulsions

descriptionPublicationkeyboard_double_arrow_right Part of book or chapter of book , Other literature type , Article 10 Dec 2007 Italy English Publisher:Steinkopff

Authors: M. Camardo; M. D'Angelo; FIORETTO, Daniele; ONORI, Giuseppe; PALMIERI, Luciano; SANTUCCI, Aldo;

doi: 10.1007/bfb0115775

handle: 11391/909306

Dielectric relaxation of microemulsions

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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.

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Italy

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University of Perugia
Italy

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