Abstract

Ultrasonic velocity, density and viscosity of different concentrations of aqueous solutions of dimethyl sulfoxide (DMSO) and acetonitrile (ACN) have been studied at 298.15 K. From the experimental data various acoustical parameters such as Free volume V_f, Relaxation time τ, Gibb’s free energy ΔG, Absorption coefficient α/f² have been evaluated. Also hydrodynamic flow studies of different concentrations of experimental solvents through commercially available Acroshield^TM H 69008 composite cellophane membrane are described and used to evaluate transport properties such as permeability coefficient L_p and frictional coefficient F_wm. The acoustical parameters of different concentrations of aqueous solutions of DMSO and ACN were correlated with their transport properties. The results are discussed in the light of intermolecular interactions occurring in the solutions and also in terms of interactions between membrane and solution.

Keywords

Ultrasonic velocity, Free volume, Absorption coefficient, Acroshield^TM H 69008 composite cellophane membrane, Permeability coefficient and Frictional coefficient