Work

Dielectric characterization and thermodynamic analysis of iso-propyl acetate and Iso-amyl acetate with dimethyl sulphoxide binary mixtures using time domain reflectometry

Year: 2025

Type: article

Abstract: • Investigated the dielectric properties and molecular interactions of isopropyl acetate (IPAc) and isoamyl acetate (IAA) with dimethyl sulfoxide (DMSO) binary mixtures using Time Domain Reflectometry (TDR) over 10 MHz–30 GHz. • Determined static dielectric constant (ε₀) and relaxation time (τ) by fitting complex permittivity spectra to the Cole–Davidson model with least squares fitting. • Evaluated molecular interactions and dielectric relaxation through Bruggeman factor, Kirkwood correlation factor, excess permittivity, and thermodynamic parameters. • Revealed structural differences and molecular interactions influenced by chain length and concentration, providing insights into dipole orientation and mixture behavior.

Source: Chemical Physics

DOI: 10.1016/j.chemphys.2025.113024

Authors: Pallavi D. Hambarde, Nitin P. Garad, Ashok C. Kumbharkhane

Institution: Swami Ramanand Teerth Marathwada University

Language: English

Topic: Thermodynamic properties of mixtures

Subfield: Fluid Flow and Transfer Processes

Field: Chemical Engineering

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $3,690

Funders: Department of Science and Technology, Ministry of Science and Technology, India, Chhatrapati Shahu Maharaj Research Training and Human Development Institute