Temperature dependence of the viscosity of the isobutyric acid-water solution along the critical isoconcentrate and phase interface

Abstract

The temperature dependences of regular and fluctuation parts of viscosity along critical isoconcentrate and phase interface have been studied on the basis of data of shear viscosity behavior of isobutyric acid-water solution near the critical consolute temperature. New method for studying the viscosity on separate branches of the coexistence curve has been proposed for the first time. The viscosity equation, which is connected with the correlation length of the system and takes into account the spatial dispersion, has been used for the experimental data analysis.