Dielectric Relaxation Study of Polar Liquids Using Time Domain Reflectometry Technique

Abstract

Complex permittivity of binary mixture of 2-methoxyethanol-propanol mixture for various temperatures was obtained in the frequency range of 10 MHz to 10 GHz using the time domain reflectometry technique. The static dielectric constant (e_s) and relaxation time (t) have been obtained from complex permittivity spectra using non-linear list square fit method. This values are used for the calculation of access permittivity e_s, excess inverse relaxation time (1/t)^E, Kirkwood correlation factor (g^eff) Bruggeman factor (f_B) and thermodynamic parameters. On the basis of above parameters, information on the molecular structure and dynamics of the mixture have been discussed.