Determination of viscosity and dielectric constant for studying the interactions in binary mixtures of organophosphorus acid and tertiary amine

作者：Liu, Yang; Lee, Man Seung^*

来源：Journal of Molecular Liquids, 2016, 222: 233-238.

DOI：10.1016/j.molliq.2016.07.054

• Binary mixture
• Dielectric constant
• Viscosity
• Interaction

Interactions in the binary mixtures containing organophosphorus acid (D2EHPA, PC88A and Cyanex 272) and tertiary amine (Alamine 336) have been studied by measuring their viscosities and dielectric constants. The nonlinear dependence of the measured parameters on the mole fraction revealed the occurrence of interactions between acidic and amine extractants in the binary mixtures. The deviations of dielectric constant and viscosity from their linear behavior and Grunber-Nissan interaction parameters were determined to quantitatively compare the strength of the interaction between the components. The variation of these values confirmed that the interaction between amine and acid extractant is proportional to the acidity of the acid extractants in the following order: Cyanex 272 + Alamine 336 < PC88A + Alamine 336 < D2EHPA + Alamine 336.

• 出版日期2016-10