Dielectric Relaxation Studies of Triethanolamine with 2-Alkoxyethanol using time Domain Reflectometry Technique

S. Kumar¹ , R. Amalanathan²

Section:Research Paper, Product Type: Isroset-Journal
Vol.7 , Issue.1 , pp.18-34, Feb-2019

CrossRef-DOI:   https://doi.org/10.26438/ijsrpas/v7i1.1834

Online published on Feb 28, 2019

Copyright © S. Kumar, R. Amalanathan . This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
 

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Abstract :
The dielectric relaxation studies of Triethanolamine with 2-Alkoxyethanols binary liquid mixtures have been determined over the frequency range of 10 MHz to 20 GHz at different concentrations using Time Domain Reflectometer (TDR) Technique at 303.15K. The dielectric permittivity (ε`) and dielectric loss (ε") has been plotted in the dielectric complex plane. The static dielectric constant (ε0), dielectric constant at high frequency (ε∞), and relaxation time (τ) values are calculated. Using these parameters, the values of Bruggeman factor (fB), excess dielectric constant (εE) and excess inverse relaxation time (1/τ)E were also calculated. The effective Kirkwood correlation factor (geff) and corrective Kirkwood correlation factor (gf) have also been determined and discussed to yield information on the structure and dynamics of the mixtures. The long range and short range interaction between the dipoles can be studied from the thermodynamic parameter, excess Helmholtz free energy (∆FE). The free energy of activation for relaxation time (∆Fτ) were also calculated and interpreted on the basis of nature of molecular interaction.

Key-Words / Index Term :
Dielectric permittivity, Dielectric loss, Relaxation time, Time Domain Reflectometer, Triethanolamine, 2-Alkoxyethanols, FTIR

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