Volumetric and Viscometric Properties of Alcohol Amines + Ethanol Binary Mixtures

Abstract

The densities and viscosities of four binary mixtures [1-amino-2-propanol + ethanol, N-(2-aminoethyl) ethanolamine + ethanol, 3-amino-1-propanol + ethanol, N-(2-aminoethyl)-1,2-ethanediamine + ethanol] were measured at T = 293.15, 303.15, 313.15, and 323.15 K. The volumetric and viscometric properties, such as excess molar volume V E, partial molar volume V̅, partial molar volume at infinite dilution V̅ ∞, apparent molar volume V φ, viscosity deviation Δη, and activation energy for viscosity flow E a, were calculated from the experimental densities and viscosities, respectively. The excess molar volume and viscosity deviation were correlated by the Redlich–Kister equation, and the volumetric and viscometric properties were analyzed on the basis of intermolecular interactions between alcohol amine and ethanol molecules.