Abstract
Density and viscosity data for the binary system diethylene glycol dimethyl ether (DEGDME) (1) + water (2) were measured at T = (293.15, 298.15, 303.15, 308.15, and 313.15) K under atmospheric pressure. Based on the experimental data, excess molar volumes (VmE), and viscosity deviation (Δν) values were calculated. The VmE values are negative, while the Δν values are positive over the entire composition range. The calculated results were fitted to a Redlich–Kister equation to obtain the coefficients and estimate the standard deviations. Based on the kinematic viscosity data, enthalpy of activation for the viscous flow, entropy of activation for the viscous flow, and Gibbs energies of activation of the viscous flow were also calculated. Meanwhile, based on Fourier transform infrared spectral changes and UV–vis spectral changes for the binary system DEGDME + H2O with varied concentrations, intermolecular interaction of DEGDME with H2O was determined.
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