Molecular Behavior of Mixture of Chemical Compounds Using TDR Techniques at Microwave Region
Author : Balaji D Achole
Abstract :
The complex permittivity spectra for 2-Propanol (2P) with n-Propanol (nP) and Ethylene Glycol (EG) were determined over the frequency range of 10 MHz to 20 GHz using the time domain reflectometry (TDR) in the temperature range of 25 °C to 35 °C for 11 different concentrations of the system. The static dielectric constant (ε0) and relaxation time (τ) have been obtained by the least square fit method. The dielectric relaxation spectra in all systems studied fits well with Debye equation. Thermodynamic properties used to access the dipole under the influence of applied field. When two liquids are mixed together, there is change in energy of the system & can be interpreted in terms of its activation energy like molar enthalpy & entropy of activation.
Keywords :
Time domain reflectometry, excess permittivity, excess inverse relaxation time, Enthalpy & Entropy.
