ABSTRACT

Density, electrical conductivity and viscosity of binary liquid mixtures of .gamma.-butyrolactone, (GBL) with 1-methyl-3-propylimidazolium bis(trifluoromethylsulfonyl)imide, [pmim][NTf2], were measured at different temperatures from (293.15 to 323.15) K and at atmospheric pressure (p = 0.1 MPa) over the whole composition range. Excess molar volumes have been calculated from the experimental densities and were fitted with Redlich Kister s polynomial equation. Other volumetric properties have been also calculated in order to obtain information about interactions between GBL and selected ionic liquid. All the results are compared with those obtained for binary mixtures of 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide, [bmim][NTf2], with GBL. From the viscosity measurements, the Angell strength parameter was calculated for pure ionic liquid indicating that [pmim][NTf2] is a fragile liquid. Electrical conductivity results were discussed in the scope of Bahe Varela theoretical model.

Compounds

#	Formula	Name
1	C4H6O2	.gamma.-butyrolactone
2	C9H13F6N3O4S2	1-methyl-3-propylimidazolium bis[(trifluoromethyl)sulfonyl]imide

Datasets

The table above is generated from the ThermoML associated json file (link above). POMD and RXND refer to PureOrMixture and Reaction Datasets. The compound numbers are included in properties, variables, and phases, if specificied; the numbers refer to the table of compounds on the left.
Type	Compound-#	Property	Variable	Constraint	Phase	Method	#Points
POMD	2	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	7
POMD	2	Viscosity, Pa*s ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Cone and plate viscometry	7
POMD	2	Electrical conductivity, S/m ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Direct current cell with electrodes	7
POMD	1 2	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Mole fraction - 2; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	84
POMD	1 2	Viscosity, Pa*s ; Liquid	Temperature, K; Liquid Mole fraction - 2; Liquid	Pressure, kPa; Liquid	Liquid	Cone and plate viscometry	84
POMD	1 2	Electrical conductivity, S/m ; Liquid	Temperature, K; Liquid Mole fraction - 2; Liquid	Pressure, kPa; Liquid	Liquid	Direct current cell with electrodes	84

Thermodynamics Research Center / ThermoML | Journal of Chemical Thermodynamics

A comprehensive study of {.gamma.-butyrolactone + 1-methyl-3- propylimidazolium bis(trifluoromethylsulfonyl)imide} binary mixtures

Papovic, S.[Snezana], Vranes, M.[Milan], Gadzuric, S.[Slobodan]

ABSTRACT