Application of Bloomfield and Dewan relationship to the excess viscosity of binary mixtures heptane + nonylbenzene versus pressure and temperature

Abstract

The excess viscosity of the binary n-heptane + nonylbenzene has been measured versus pressure (P < 400 bar) and temperature (40°C < T < 80°C) with a falling-body viscometer. The 105 experimental values were adjusted by means of the Bloomfield-Dewan relationship and the Flory's theory without using any adjustable parameter. The average absolute deviation observed on the mixture viscosity is quite good: 5.7%.