|Title:||Density and Viscosity Measurements for Binary Mixtures of 1-Ethyl-3-methylimidazolium Tetrafluoroborate ([Emim][BF <inf>4</inf> ]) with Dimethylacetamide, Dimethylformamide, and Dimethyl Sulfoxide||Authors:||Fan, Xian Heng
Su, Chie Shaan
|Issue Date:||11-Feb-2016||Publisher:||AMER CHEMICAL SOC||Journal Volume:||61||Journal Issue:||2||Start page/Pages:||920||Source:||Journal of Chemical and Engineering Data||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.
|Appears in Collections:||化學工程學系|
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