Structural and dielectric relaxation studies of 1, 4, and 1, 3 -butanediol–1, 4-dioxane mixtures using TDR technique

Abstract

Time domain reflectometry (TDR) was used to examine the complex dielectric permitivity spectra (CPS) of binary mixtures of 1,4, and 1,3 butanediol (BD) with 1,4 Dioxane (Dx) at high frequencies (10 MHz–50 GHz). Both systems show the Cole–Davidson type of relaxation process. The least squares fit (LSF) method is applied to compute dielectric relaxation parameters from the CPS. The interest of the ongoing research is to understand the molecular associations, orientation of electric dipoles, and change in electric dipole density in the liquid mixture with the help of excess dielectric parameters, Bruggeman factor (f_B) and the Kirkwood correlation factor for both systems.

Keywords:

• Dielectric permittivity (ε′)
• TDR technique
• excess dielectric parameters
• Bruggeman factor
• effective correlation factor

Acknowledgments

The financial support received via the project’s grant (“SB/S2/LOP-032/2013”) acknowledges the Department of Sciences and Technology (DST), New Delhi. The University Grant Commission (UGC) in New Delhi is appreciative of their financial help to NPG.

Disclosure statement

No potential conflict of interest was reported by the author(s).