Abstract

DIELECTRIC RELAXATION STUDY ON TWO ISOMERS OF BUTANEDIOLS

Nitin P. Garad* and Ashok C. Kumbharkhane

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Abstract

The dielectric relaxation studies on the two isomers of butanediols have been done by using the time domain raflectometry (TDR) technique at various temperaturs. The complex permittivity spectra of 1, 3 and 1, 4-butanediol have been measured in the frequency range from 10MHz to 50GHz.The complex permittivity spectrum shows the Cole-Davidson type relaxation. From the complex permittivity spectra the dielectric parameters such as static dielectric constant and relaxation time are obtained using the nonlinear least square fit method. The orientation of electric dipoles was studied using the Kirkwood correlation factor for both the butanediols.

Keywords: Complex permittivity spectra, Time domain reflectometry, static dielectric constant, relaxation time and Kirkwood correlation factor.