Density, viscosity and molecular interaction of binary system tetraethylene glycol plus dimethyl sulfoxide at T = (293.15 to 318.15) K

Density (rho) and dynamic viscosity (eta) for the binary system of tetraethylene glycol (TeEG) and dimethyl sulfoxide (DMSO) were measured at T = (293.15 to 318.15) K with the step of 5 K and surrounding ambient pressure. From experimental rho and eta values, the excess molar volumes (V-m(E)), apparent molar volumes (V phi(1) and V phi(2)), -partial molar volumes ((V1) over bar and (v2) over bar), viscosity deviations (Delta eta) and the thermal expansion coefficient (alpha p) were calculated. The pure solvents and other concentrations were characterized using UV-Vis, fluorescence, FTIR, and H-1 NMR spectral technologies, and the spectral results illuminated that hydrogen bonds were formed between TeEG and DMSO. (C) 2017 Elsevier B.V. All rights reserved.