Environmentally friendly solutions of liquid poly(ethylene glycol) and imidazolium based ionic liquids with bistriflamide and triflate anions: Volumetric and viscosity studies
Samo za registrovane korisnike
2013
Autori
Vuksanović, JelenaCalado, Marta S.
Ivaniš, Gorica
Kijevčanin, Mirjana
Šerbanović, Slobodan P.
Višak, Zoran P.
Članak u časopisu (Objavljena verzija)
Metapodaci
Prikaz svih podataka o dokumentuApstrakt
In this paper, densities and viscosities of the solutions of PEG200 with two imidazolium ionic liquids, 1-ethyl-3-methylimidazolium bis{(trifluoromethyl)sulfonyl}amide ([C(2)mim][NTf2]) and 1-ethyl-3-methylimidazolium trifluoromethanesulfonate ([C(2)mim][OTf]), at pressure 0.1 MPa and in the temperature range of 288.15-318.15 K, were measured. The experimental data were used to calculate excess molar volumes, deviations in viscosity and excess molar Gibbs free energies of activation of viscous flow for the studied solutions. Excess molar volumes indicate strong attractive interactions provoked by the studied ionic liquids which are even enhanced in the case of the [C(2)mim][OTf] as a solution component. The analysis of the viscosity data showed that these cannot be solely explained on the basis of the interactions between the present molecules/ions and that the factors also related to entropy - size and packing of molecules - must be considered as well. Thus, excess molar Gibbs free en...ergy of activation of viscous flow appeared as very important for a complete description of the current viscosity behavior.
Ključne reči:
Ionic liquids / Excess molar volume / Viscosity / Excess Gibbs energy of activation of viscous flowIzvor:
Fluid Phase Equilibria, 2013, 352, 100-109Izdavač:
- Elsevier Science Bv, Amsterdam
Finansiranje / projekti:
- Ministry of Education and Science, Serbia
- Novi industrijski i ekološki aspekti primene hemijske termodinamike na unapređenje hemijskih procesa sa višefaznim i višekomponentnim sistemima (RS-MESTD-Basic Research (BR or ON)-172063)
- Fundacao para a Ciencia e a Tecnologia, (FCT), PortugalPortuguese Foundation for Science and Technology [PTDC/EQU-EPR/103505/2008]
- project "Projecto Estrategico" [PEst-OE/QUI/UI0100/2013]
DOI: 10.1016/j.fluid.2013.05.013
ISSN: 0378-3812
WoS: 000322685900017
Scopus: 2-s2.0-84880045673
Institucija/grupa
Tehnološko-metalurški fakultetTY - JOUR AU - Vuksanović, Jelena AU - Calado, Marta S. AU - Ivaniš, Gorica AU - Kijevčanin, Mirjana AU - Šerbanović, Slobodan P. AU - Višak, Zoran P. PY - 2013 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2422 AB - In this paper, densities and viscosities of the solutions of PEG200 with two imidazolium ionic liquids, 1-ethyl-3-methylimidazolium bis{(trifluoromethyl)sulfonyl}amide ([C(2)mim][NTf2]) and 1-ethyl-3-methylimidazolium trifluoromethanesulfonate ([C(2)mim][OTf]), at pressure 0.1 MPa and in the temperature range of 288.15-318.15 K, were measured. The experimental data were used to calculate excess molar volumes, deviations in viscosity and excess molar Gibbs free energies of activation of viscous flow for the studied solutions. Excess molar volumes indicate strong attractive interactions provoked by the studied ionic liquids which are even enhanced in the case of the [C(2)mim][OTf] as a solution component. The analysis of the viscosity data showed that these cannot be solely explained on the basis of the interactions between the present molecules/ions and that the factors also related to entropy - size and packing of molecules - must be considered as well. Thus, excess molar Gibbs free energy of activation of viscous flow appeared as very important for a complete description of the current viscosity behavior. PB - Elsevier Science Bv, Amsterdam T2 - Fluid Phase Equilibria T1 - Environmentally friendly solutions of liquid poly(ethylene glycol) and imidazolium based ionic liquids with bistriflamide and triflate anions: Volumetric and viscosity studies EP - 109 SP - 100 VL - 352 DO - 10.1016/j.fluid.2013.05.013 ER -
@article{ author = "Vuksanović, Jelena and Calado, Marta S. and Ivaniš, Gorica and Kijevčanin, Mirjana and Šerbanović, Slobodan P. and Višak, Zoran P.", year = "2013", abstract = "In this paper, densities and viscosities of the solutions of PEG200 with two imidazolium ionic liquids, 1-ethyl-3-methylimidazolium bis{(trifluoromethyl)sulfonyl}amide ([C(2)mim][NTf2]) and 1-ethyl-3-methylimidazolium trifluoromethanesulfonate ([C(2)mim][OTf]), at pressure 0.1 MPa and in the temperature range of 288.15-318.15 K, were measured. The experimental data were used to calculate excess molar volumes, deviations in viscosity and excess molar Gibbs free energies of activation of viscous flow for the studied solutions. Excess molar volumes indicate strong attractive interactions provoked by the studied ionic liquids which are even enhanced in the case of the [C(2)mim][OTf] as a solution component. The analysis of the viscosity data showed that these cannot be solely explained on the basis of the interactions between the present molecules/ions and that the factors also related to entropy - size and packing of molecules - must be considered as well. Thus, excess molar Gibbs free energy of activation of viscous flow appeared as very important for a complete description of the current viscosity behavior.", publisher = "Elsevier Science Bv, Amsterdam", journal = "Fluid Phase Equilibria", title = "Environmentally friendly solutions of liquid poly(ethylene glycol) and imidazolium based ionic liquids with bistriflamide and triflate anions: Volumetric and viscosity studies", pages = "109-100", volume = "352", doi = "10.1016/j.fluid.2013.05.013" }
Vuksanović, J., Calado, M. S., Ivaniš, G., Kijevčanin, M., Šerbanović, S. P.,& Višak, Z. P.. (2013). Environmentally friendly solutions of liquid poly(ethylene glycol) and imidazolium based ionic liquids with bistriflamide and triflate anions: Volumetric and viscosity studies. in Fluid Phase Equilibria Elsevier Science Bv, Amsterdam., 352, 100-109. https://doi.org/10.1016/j.fluid.2013.05.013
Vuksanović J, Calado MS, Ivaniš G, Kijevčanin M, Šerbanović SP, Višak ZP. Environmentally friendly solutions of liquid poly(ethylene glycol) and imidazolium based ionic liquids with bistriflamide and triflate anions: Volumetric and viscosity studies. in Fluid Phase Equilibria. 2013;352:100-109. doi:10.1016/j.fluid.2013.05.013 .
Vuksanović, Jelena, Calado, Marta S., Ivaniš, Gorica, Kijevčanin, Mirjana, Šerbanović, Slobodan P., Višak, Zoran P., "Environmentally friendly solutions of liquid poly(ethylene glycol) and imidazolium based ionic liquids with bistriflamide and triflate anions: Volumetric and viscosity studies" in Fluid Phase Equilibria, 352 (2013):100-109, https://doi.org/10.1016/j.fluid.2013.05.013 . .