Modeling of the Viscosity Behavior in the Interface Area of Two Miscible Liquids

• Authors: E. Szwajczak , R. Stragaczyński , H. Herba , J. Świergiel , J. Jadżyn
• Languages of publication: EN

Abstracts

EN

The paper presents the results of the share viscosity (η) investigations performed for binary mixtures composed of the liquids of extremely different viscosities: a high-viscous α-tocopherol acetate (η ≈ 10 Pa s) is mixed with 4-n-propylcyclohexyl-4'-n-pentylphenyl (η ≈ 10 mPa s) and mesitilene (η ≈ 1 mPa s), the two low-viscous solvents composed of the non-polar molecules of an essentially different shape. It was found that the viscosities of the mixtures, disregarding the molecular shape of the non-polar admixture, exhibit a strong nonlinear dependence on tocopherol mole fraction and, at a given temperature, the dependence can be described with an exponential function. For a constant tocopherol concentration in the mixtures, the viscosity temperature dependences are well described with the Vogel-Fulcher-Tammann relation. The results can be considered as a model of the viscosity behavior related to the laminar flow of miscible liquids of a different viscosity being in contact to each other.

Keywords

EN

65.20.-w; 66.20.Ej; 83.85.Vb

Discipline

• 66.20.Ej: Studies of viscosity and rheological properties of specific liquids
• 83.85.Vb: Small amplitude oscillatory shear (dynamic mechanical analysis)
• 65.20.-w: Thermal properties of liquids

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2009
• Volume: 115
• Issue: 5
• Pages: 905-908

Dates

published

2009-05

received

2008-12-04

(unknown)

2009-03-24

(unknown)

2009-04-08

Contributors

author

E. Szwajczak

• Faculty of Mathematics and Applied Physics, Rzeszów University of Technology, W. Pola 2, 35-959 Rzeszów, Poland

author

R. Stragaczyński

• Faculty of Mathematics and Applied Physics, Rzeszów University of Technology, W. Pola 2, 35-959 Rzeszów, Poland

author

H. Herba

• Faculty of Mathematics and Applied Physics, Rzeszów University of Technology, W. Pola 2, 35-959 Rzeszów, Poland

author

J. Świergiel

• Institute of Molecular Physics, Polish Academy of Sciences, M. Smoluchowskiego 17, 60-179 Poznań, Poland

author

J. Jadżyn

• Institute of Molecular Physics, Polish Academy of Sciences, M. Smoluchowskiego 17, 60-179 Poznań, Poland

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Identifiers

DOI

10.12693/APhysPolA.115.905