Document Type : Regular Article
Department of Physics, V.R. Siddhartha Engineering College, Vijayawada, Andhra Pradesh
ASSOCIATE PROFESSOR DEPARTMENT OF PHYSICS VISHNU ENGINEERING COLLEGE FOR WOMEN
Department of Chemistry, V.R. Siddhartha Engineering College, Vijayawada
PROFESSOR DEPARTMENT OF CHEMISTRY BITS PILANI KK BIRLA GOA CAMPUS
The viscosities of binary mixtures of 1,4-butanediol with o-cresol, m-cresol and p-cresol have been determined at 303.15, 308.15, 313.15 and 318.15 K over the entire mole fraction range. The deviation in viscosity,, and excess Gibbs energy of activation (G*E) of viscous flow have been examined in terms of structural changes and interactions. The deviations/excess values were fitted to the Redlich-Kister equation to determine the fitting parameters and the root-mean square deviations. The results obtained for viscosity of binary mixtures were used to test the semi-empirical relations of Bingham, Frenkel, Kendall, HindUbbelhode, Refutas, Sutherland Wassiljiewa, Gambill, McAllister, Hind, Grunberg, Wijk, McAllister 4 body, Tamura Kurata, Katti-Chaudhri and Nhaesi.