Volumetric and viscometric properties of binary and ternary mixtures of 1-butyl-3-methylimidazolium tetrafluoroborate, monoethanolamine and water

Densities and viscosities of binary {[Bmim][BF4] + H2O}, {[Bmim][BF4] + MEA}, (MEA + H2O) and ternary mixtures {[Bmim][BF4] + MEA + H2O} were measured at T = (293.15-333.15) K. The volumetric and viscometric properties, such as excess molar volume V-E, viscosity deviation Delta eta, and excess Gibbs energy of activation of viscous flow Delta G*(E) for all mixtures, and apparent molar volume, excess partial molar volume and Grunberg-Nissan interaction parameter G(12) for binary mixtures, were deduced from experimental results, and the intermolecular interactions in solutions were also analysed. The excess molar volumes were correlated using the Redlich-Kister polynomial equation for binary mixtures, and Singh et al. equation for the ternary mixture with corresponding binary parameters. The viscosities of binary and ternary solutions were respectively fitted by Jouyban-Acree equation and its extended equation at each measurement temperature, the correlated values are in good agreement with the corresponding experimental data. (C) 2016 Elsevier Ltd.