Jouyban–Acree model assessment for physico-chemical properties of N,N-Dimethylbenzylamine with isomeric chlorobenzene systems.

Mubeena, Shaik; Sreedevi, G.; Ramanjaneyulu, E.; Sankar, M. Gowri; Ramachandran, D.

Densities (ρ), speeds of sound (u), and viscosities (η) of binary mixtures of N,N-dimethyl benzyl amine (DMBA) with 1,2-dichlorobenzene (1,2-DCB), 1,3-dichlorobenzene (1,3-DCB), and 1,2,4-trichlorobenzene (1,2,4-TCB) were measured at temperatures ranging from 303.15 K to 313.15 K for selected compositions. Excess molar volume (VE), excess isentropic compressibility (κsE), viscosity deviation (Δη), and excess Gibbs free energy for activation of viscous flow (ΔG*E) were subsequently determined from the experimental data. The obtained results were analysed to elucidate the nature of intermolecular interactions, specifically focusing on attractive forces, steric hindrance or hetero-association within the mixtures. The Prigogine–Flory–Patterson (PFP) theory was employed to identify the dominant type of molecular interaction. The Jouyban–Acree model was applied to calculate densities, speeds of sound, and viscosities. The accuracy of the model was evaluated using mean relative deviations (MRDs) and individual relative deviations (IRDs) between the calculated and experimental values.

VISCOUS flow; GIBBS' free energy; MOLECULAR volume; STERIC hindrance; BINARY mixtures

Physics & Chemistry of Liquids, 2025, Vol 63, Issue 1, p118

0031-9104

Academic Journal

10.1080/00319104.2024.2375525