Density and Viscosity Measurements for Binary Mixtures of 1-Ethyl-3-methylimidazolium Tetrafluoroborate ([Emim][BF 4 ]) with Dimethylacetamide, Dimethylformamide, and Dimethyl Sulfoxide
Journal
Journal of Chemical and Engineering Data
Journal Volume
61
Journal Issue
2
Pages
920
Date Issued
2016-02-11
Author(s)
Abstract
© 2016 American Chemical Society. The density and viscosity data of three binary liquid mixtures containing the ionic liquid (IL) 1-ethyl-3-methylimidazolium tetrafluoroborate and organic solvents, dimethylacetamide (DMAC), dimethylformamide (DMF), and dimethyl sulfoxide (DMSO) were obtained under atmospheric pressure, at temperatures of 303.15 to 333.15 K over the entire composition range. A vibrating-tube digital density meter and a capillary viscometer were used for density and viscosity measurements, respectively. Excess molar volumes (V E ) and viscosity deviations (Δη) for the binary mixture system were calculated from the experimental data and were satisfactorily fitted with the Redlich-Kister equation. Adding DMAC, DMF, and DMSO led to negative values of V E and Δη. This finding revealed that the packing of the constituents was more efficient, and the anion-cation interaction of IL was decreased in the binary liquid mixtures. The sequences of V E and Δη for the three binary liquid mixtures in this study are also discussed using intermolecular interactions.
SDGs
Publisher
AMER CHEMICAL SOC
Type
journal article