Microwave dielectric relaxation study of 1-Hexanol with 1-propenol mixture by using time domain reflectometry at 300K

Abstract

Dielectric relaxation measurement of 1-Hexanol (1-HE), 1-Propenol (1-PR) & their complex have been carried out over the entire concentration range using time domain reflectometry technique at 300 K in the frequency range of 10 KHz to 20-GHz. Bilinear calibration method is used to obtain complex permittivity ¿*(¿) from complex reflection coefficient ¿*(¿) over the frequency range of 10 MHz to 20 GHz. The Excess inverse relaxation time (1/t) <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">E</sup> , Kirkwood correlation factor (g <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">eff</sup> ) and Bruggeman factor (f <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">B</sub> ) are also estimated to study the solute-solvent interaction. The value of dielectric constant increases & relaxation time decreases with increase in concentration 1-PR in 1-HE. Bruggeman plot shows a non - linearity of the curve for all concentration, indicate the hetero interaction which may be due to hydrogen bonding of the OH group of 1-PR with 1-HE.