Journal
JOURNAL OF CHEMICAL THERMODYNAMICS
Volume 91, Issue -, Pages 360-368Publisher
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jct.2015.07.048
Keywords
gamma-butyrolactone; Imidazolium ionic liquid; Volumetric properties; Transport properties; Bahe-Varela theory
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Funding
- Ministry of Education and Science of Serbia [ON172012]
- Provincial Secretariat for Science and Technological Development of APV
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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. (C) 2015 Elsevier Ltd. All rights reserved.
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