Thermophysical properties of binary mixtures containing 3-amino-1-propanol and isomers of butanol at 298.15 K-318.15 K

Background

Viscometric and ultrasonic velocity properties of binary mixtures containing 3–amino–1–propanol (3AP) + isomeric butanol were measured in the temperature range of (298.15–318.15) K and 0.1 MPa pressure. The excess isentropic compressibility (${\kappa }_S^E$), deviation in viscosity (Δη), and ultrasonic velocity (Δu) were computed using the measured data.

Methodology

The graph theoretical approach, the Bloomfield-Devan model, and the Dey-Biswas model were applied to analyze the ${\kappa }_S^E$ and Δη values at 298.15 K, respectively. Furthermore, various correlations were used to interpret the experimental viscosity data. The deviations in the thermodynamic properties were analyzed to understand their correlation with specific intermolecular interactions, such as hydrogen bonding, dipole-dipole interactions, and van der Waals forces, which influence the behavior of the binary mixtures.

Significant Findings

The theoretical and experimental findings show good agreement. Also, the influence of temperature on the measured properties was discussed. Several predictive methods and theories, including Nomoto, Van Dael, Impedance, Jacobson’s free-length theory, and Schaaf’s collision factor theory, were used to correlate the ultrasonic speed (u) data.