Phase Equilibrium Study in Aqueous Solutions Containing Ionic Liquid 1-Butyl-3-methyl Imidazolium Chloride and Poly(propylene glycol) 400 or Poly(ethylene glycol) Dimethyl Ether 250 via a Vapor-Liquid Equilibrium Study at T = 298.15 K
Zafarani-Moattar, M. T.[Mohammed Taghi], Shekaari, H.[Hemayat], Agha, E. M. H.[Elnaz Mazaher Haji]
To study the phase equilibrium in {ionic liquid, 1-butyl-3-methyl imidazolium chloride + polypropylene glycol or polyethylene glycol di-methyl ether + water} solutions, vapor- liquid equilibrium data for these systems were determined at T = 298.15 K. To model the water activity data, the Wilson, modified Wilson, NRTL, and modified NRTL models were applied. Vapor pressure depression data were used to investigate the hydration of studied polymers in aqueous media. Further, to discuss the salting effect of studied ionic liquid to aqueous polymers solutions Gibbs energies of transfer for polymers from water to aqueous ionic liquid solutions were computed. The positive and increasing values of Gibbs energies of transfer with increasing ionic liquid concentration indicate that this ionic liquid has salting-out effect on aqueous polymers solutions which mean there are unfavorable interactions between ionic liquid and studied polymers. These results are consistent with aqueous two-phase systems formation of studied ionic liquid on both polymers in aqueous media.
Compounds
#
Formula
Name
1
C8H15ClN2
1-butyl-3-methylimidazolium chloride
2
H2O
water
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.