|
Abstract
|
In this work, density, ρ, and viscosity, η, of pure components of 1-propanol, 2-propanol, 3-amino-1-propanol, and 2-butanol along with the binary mixtures of {x12-butanol + x21-propanol}, {x12-butanol + x22-propanol}, and {x_12-butanol + x_23-amino-1-propanol} were determined over the entire composition range at temperatures (293.15 to 323.15) K. The experimental data of density and viscosity were used to calculate the excess molar volumes, V_m^E, and viscosity deviations, ∆η, of the mixtures. The obtained results show that the V_m^E values of the mixtures are negative in the whole composition range and increase with increasing temperature. Viscosity deviations of {x12-butanol + x21-propanol} mixture are negative in low temperatures and are positive at high temperatures, while the ∆η values of {x12-butanol + x22-propanol} and {x_12-butanol + x_23-amino-1-propanol} mixtures are negative in the whole composition range and decrease with increasing temperature. The excess molar quantities were correlated by Redlich- Kister equation. The ERAS model was used to correlate the excess molar volumes of the mixtures at temperatures (298.15, 303.15, 313.15) K. Comparison between the calculated and experimental V_m^E values show a good agreement for all three mixtures.
|