Dielectric relaxation Study of butanenitrile and 1, 2-dichloroethane mixture at 35°C temperature

The dielectric relaxation study of butanenitrile(BN) and 1,2 Dichloroethane(DCE) mixture has been carried out at 350C temperature in the frequency range of 10 MHz to 20 GHz using time domain reflectometry (TDR) for 11 different concentrations of the system. The dielectric parameters such as static permittivity ( e 0) and relaxation time (t) have been obtained by Fourier transform and the least squares fit method. The Excess parameters of the mixtures such as excess permittivity and excess inverse relaxation time have been determined. In the mixtures excess permittivity (eE) is found to be positive in DCE rich region and negative in BN rich region. The excess inverse relaxation time (1/t)E is found to be negative. It indicates that the effective dipoles produces hindering field in the mixture and dipole rotates slowly.

Author(s): Ishwar G. Shere

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