Dielectric relaxation studies of 1,3 and 1,4-butanediol–water mixtures using time domain technique

Abstract

The Complex dielectric permittivity measurements in the frequency range 10 MHz–30 GHz have been carried out for 1,3 and 1,4 -Butanediol in Water mixtures over the entire concentration range using time domain reflectometry method at 25 °C. The dielectric parameters such as static dielectric constant and relaxation time are obtained from the complex permittivity spectra using nonlinear least square fit method. Molecular interactions among the butanediol–water mixtures have been studied using Kirkwood correlation factor, Excess dielectric constant and Bruggeman factor.