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Ukr. J. Phys. 2015, Vol. 60, N 9, p.854-860
doi:10.15407/ujpe60.09.0854    Paper

Makhlaichuk V.M.

I.I. Mechnikov National University of Odesa
(2, Dvoryans’ka Str., Odesa 65026, Ukraine; e-mail: interaktiv@ukr.net)

Kinematic Shear Viscosity of Water, Aqueous Solutions of Electrolytes, and Ethanol

Section: Soft Matter
Original Author's Text: Ukrainian

Abstract: The nature of the kinematic shear viscosity in associated (water and aqueous solutions of electrolytes) and strongly associated (alcohols) liquids has been studied. The behavior of the kinematic shear viscosity is shown to be governed by orientational correlations and the translational motion of molecules, which is characteristic of argon. The former mechanism dominates in the supercooled area and in normal states close to the triple point. The latter one is responsible for the viscosity at higher temperatures. The characteristic temperature tH separating those areas is found to be close to the triple point in the case of water and electrolyte aqueous solutions, and to the critical point in the case of ethanol. The agreement with experimental data is quite satisfactory.

Key words: viscosity, water, ethanol.