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Determination of Solubility Parameters of Ionic Liquids and Ionic Liquid/Solvent Mixtures from Intrinsic Viscosity
Author(s) -
Weerachanchai Piyarat,
Wong Yuewen,
Lim Kok Hwa,
Tan Timothy Thatt Yang,
Lee JongMin
Publication year - 2014
Publication title -
chemphyschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.016
H-Index - 140
eISSN - 1439-7641
pISSN - 1439-4235
DOI - 10.1002/cphc.201402345
Subject(s) - solubility , ionic liquid , solvent , dissolution , hildebrand solubility parameter , chemistry , viscosity , dispersion (optics) , ionic bonding , thermodynamics , inorganic chemistry , organic chemistry , ion , physics , optics , catalysis
The total and partial solubility parameters (dispersion, polar and hydrogen‐bonding solubility parameters) of ten ionic liquids were determined. Intrinsic viscosity approaches were used that encompassed a one‐dimensional method (1D‐Method), and two different three‐dimensional methods (3D‐Method1 and 3D‐Method2). The effect of solvent type, the dimethylacetamide (DMA) fraction in the ionic liquid, and dissolution temperature on solubility parameters were also investigated. For all types of effect, both the 1D‐Method and 3D‐Method2 present the same trend in the total solubility parameter. The partial solubility parameters are influenced by the cation and anion of the ionic liquid. Considering the effect on partial solubility parameters of the solvent type in the ionic liquid, it was observed that in both 3D methods, the dispersion and polar parameters of a 1‐ethyl‐3‐methylimidazolium acetate/solvent (60:40 vol %) mixture tend to increase as the total solubility parameter of the solvent increases.