LAUSR

Abstract The Complex permittivity spectra of Tetraethylene glycol(TTEG)-Water mixture over entire concentration range at variant temperatures (0 °C–25 °C) have been determined by Time Domain Reflectometry technique in the frequency range 10 MHz to 50 GHz. The complex permittivity spectra for TTEG- water were fitted in Cole-Davidson model. The Static dielectric constant (e0), Relaxation time (τ), effective Kirkwood correlation factor (geff), excess permittivity (e0E), thermodynamic parameters (activation enthalpy and activation entropy) and Bruggeman factor (fB) have been calculated by non-linear least square fit method. The intermolecular interaction between TTEG-Water binary mixture suggest the non-linear behavior of dielectric parameters. The contribution of hydrogen bonding interactions among the solute-solvent mixtures is confirmed by Excess properties and Bruggeman factor.