Dielectric relaxation and thermodynamic study of aqueous Glycine using time domain reflectometry technique

Abstract

Using the Time Domain Reflectometry technique in the frequency range of 10 MHz to 50 GHz, the complex permittivity spectra of Glycine (Gly) with water combination have been determined over the complete concentration range of mole fractions and in temperature range of 10–25 °C. The Cole-Davidson model was used to fit the intricate permittivity spectra for Gly and water.

The non-linear least square fit method has been used to compute the static dielectric constant (ε₀), relaxation time (τ), effective Kirkwood correlation factor (g^eff), excess permittivity (${\mathrm{\epsilon }}_0^E$), (1/τ)^E excess inverse relaxation time (1/τ)^E and Bruggeman factor (f_B). An automated density and sound velocity meter, the Anton Paar DSA 5000 M and viscosity with Lovis 2000 M/ME, was used to measure the density, sound velocity, and viscosity of aqueous solutions. FT-IR spectra are used to identify the conformation assessments of hydrogen bonding development between complicated mixtures.

Keywords:

• Glycin
• complex permittivity
• Kirkwood correlation factor
• excess dielectric properties
• Bruggeman factor
• FT-IR

Disclosure statement

No potential conflict of interest was reported by the authors.