Correlation and measurement of density and viscosity of aqueous mixtures of glycerol and N-methyldiethanolamine, monoethanolamine, piperazine and ionic liquid

The density and viscosity of aqueous mixtures of glycerol and N-Methyldiethanolamine (MDEA), glycerol and Monoethanolamine (MEA), glycerol and Piperazine (PZ) as well as glycerol and ionic liquid (IL) 1-butyl-3-methylimidazolium dicyanamide ([bmim][DCA]) were determined in this study. It was found that the density and viscosity of the mixtures increased with increasing glycerol concentration. The correlations of density and viscosity of the mixtures were determined as a function of the concentration of glycerol and temperature. For density correlation, the empirical linear equation used in this work showed excellent accuracy with 0.62% as the highest percentage deviation for all the mixtures involved. While for the viscosity correlation, there was a good fit between the mixtures and the extended Arrhenius equation with 9.91% as the highest percentage deviation from the experimental viscosity data.