Density, Surface Tension, and Viscosity of Ionic Liquids (1-Ethyl-3-methylimidazolium diethylphosphate and 1,3-Dimethylimidazolium dimethylphosphate) Aqueous Ternary Mixtures with MDEA

Abstract

The density, surface tension, and viscosity of ionic liquids (1-ethyl-3-methylimidazolium diethylphosphate and 1,3-dimethylimidazolium dimethylphosphate) and ternary mixtures with aqueous MDEA, were measured over the whole concentrations range at various temperatures (293.15–343.15) K by using Anton Paar DMA 4500 densimeter, Kruss Processor Tensiometer K100, and R/S+ Brookfield rheometer. The experimental density and surface tension decrease linearly with mole fractions of ionic liquids. Data on viscosity demonstrates a temperature-dependence behavior, that decreased nonlinearly with temperature. Evaluations of the measured physicochemical properties were completed. The best correlation for density and surface tension data were linear fitting, while the viscosity data was obtained by polynomial regression. ILs mole fraction also influenced the experimental density, surface tension, and viscosity. The Jouyban–Acree model was used to correlate the physicochemical properties of the mixtures and pure compound...