Physicochemical properties of glycine-based ionic liquid [QuatGly-OEt][EtOSO 3] (2-ethoxy-1-ethyl-1,1-dimethyl-2- oxoethanaminium ethyl sulfate) and its binary mixtures with poly(ethylene glycol) (M w = 200) at various temperatures

Tzi Yi Wu, Bor Kuan Chen, Lin Hao, Yuan Chung Lin, H. Paul Wang, Chung Wen Kuo, I. Wen Sun

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14 Citations (Scopus)


This work includes specific basic characterization of synthesized glycine-based Ionic Liquid (IL) [QuatGly-OEt][EtOSO 3] by NMR, elementary analysis and water content. Thermophysical properties such as density, ρ, viscosity, η, refractive index, n, and conductivity, κ, for the binary mixture of [QuatGly-OEt][EtOSO 3] with poly(ethylene glycol) (PEG) (M w = 200) are measured over the whole composition range. The temperature dependence of density and dynamic viscosity for neat [QuatGly-OEt][EtOSO 3] and its binary mixture can be described by an empirical polynomial equation and by the Vogel-Tammann-Fucher (VTF) equation, respectively. The thermal expansion coefficient of the ILs is ascertained using the experimental density results, and the excess volume expansivity is evaluated. The negative values of excess molar volume for the mixture indicate the ion-dipole interactions and packing between IL and PEG oligomer. The results of binary excess property (V E m) and deviations (δη,δ xn, δ φ, δ xR, and δ φR) are discussed in terms of molecular interactions and molecular structures in the binary mixture.

Original languageEnglish
Pages (from-to)8750-8772
Number of pages23
JournalInternational journal of molecular sciences
Issue number12
Publication statusPublished - 2011 Dec

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Molecular Biology
  • Spectroscopy
  • Computer Science Applications
  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Inorganic Chemistry

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