Structural evaluation of Acetate-Xylene solutions - A thermodynamic and dielectric approach using microwave technique

Abstract

At different temperature, frequency and composition the complex permittivity spectra (CPS) of acetate with xylene were measured using Time domain dielectric spectroscopy technique in 10 MHz–50 GHz frequency range. Values of static dielectric parameters have been obtained by fitting CPS to Debye model using non-linear least squares fit method. Bruggeman factor and thermodynamic properties have been evaluated to understand structural variation and dielectric behavior of ethyl acetate-xylene binary mixtures. The experimental evaluation & observation of ε_o^E, (1/τ)^E and g^eff has been commenced to reveal the behavior of molecular construction, intermolecular interactions in n-butyl acetate-xylene binary mixture. Both systems studied in comparison with previous to understand molecular dynamics and effect of high frequency, temperature with variation in composition, which suggest a rise in alignment of molecules, non-linear function with hetero-interactions with decrease in dipoles having slower rotation, and has antiparallel orientation of dipoles with clear understanding the concept of molecular dynamics.