The study of thermo physical properties of binary liquid mixtures of 2-(2-butoxy ethoxy) ethanol (butyl carbitol) with n-butyl amine, sec.- butyl amine, tert-butyl amine, n-hexyl amine, n-octyl amine and cyclo hexyl amine at 308.15 K

摘要

Densities and viscosities of binary liquid mixtures of 2 - (2-Butoxy ethoxy) ethanol (Butyl Carbitol) (BC) with nbutyl amine (NBA), sec-butyl amine (SBA). ter-butylamine (TBA), n-hexylamine (NHA), n-octylamine (NOA) and cyclohexylamine (CHA) have been measured at 308.15 K. From the experimental data the excess volume (VE), excess viscosity ( ηE ) and the excess molar Gibbs free energy of the activation of viscous flow (Ga?° E) have been computed and presented as function of composition. The interaction parameter d1 of the Grunberg and Nissan has been calculated. The observed variations of the properties for the above mixtures conclude that the interactions between unlike molecules predominate over the dissociation effects in the individual components. It is also evident that the presence of strong interactions between unlike molecules is predominant and characterized by the negative VE and positive ( ηE ), ( Ga?° E ) and d1 values. The excess volume, excess Viscosity and excess molar Gibb′s free energy of the activation of viscous flow have been fitted to Redlich – Kister equation to derive the coefficients and standard deviations.