Interaction of ethylene glycols in aqueous Dimethyl sulfoxide Solutions at different Temperatures

Abstract

Densities (ρ) and viscosities (η) of ethyleneglycole solutions in the range 0.1 to 0.35 mol dm^-3 in 2% and 5% (w/w) Dimethylsulfoxide (DMSO)-water mixtures have been measured at different temperatures (298.15,303.15,308.15 and 313.15 K) .From these experimental data , the apparentmolar volume ϕ_ν,limiting partial molar volume ϕ^º_ν, the slop S_ν , Jones-Dole A and B-coefficients , Gibbs free energy of activation for viscous flow of solution ∆G^*, enthalpy ∆H^* and entropy ∆S^*were calculated .The results shows a strong ion-solvent interactions and weak ion-ion interactions and also indicate that the ethylene glycole acts as structure breakers.