Thermodynamics Research Center / ThermoML | Journal of Chemical Thermodynamics

ABSTRACT

Density q, viscosity g and refractive index nD have been experimentally measured for four binary mixtures nicotine + 1-butanol, nicotine + 2-butanol, nicotine + 1,2-propanediol and nicotine + 1,3- propanediol over the temperature range T = (293.15.323.15) K with temperature step 5 K and at atmospheric pressure. Excess molar volumes VE, viscosity deviations Dg, deviations in refractive index DnD, excess Gibbs free energy of activation of viscous flow DG.E, thermal expansion coefficients a, excess thermal expansion coefficients aE, partial molar volumes Vi , excess partial molar volumes VEi and it fs values at infinite dilutions VE;1 i were calculated from experimental data and used to analyze non-ideal behavior of mixtures. Fourier-transform infrared analysis of binary mixtures and corresponding pure components was performed at 298.15 K in order to gain insight into the molecular structure of mixtures and possible intermolecular interactions. Performed infra-red analysis confirms the presence of hydrogen bonding between unlike compounds, except for the system nicotine + 1-butanol. Here, the non-ideal behavior of mixtures is contributed to strong intermolecular interaction or in the case of nicotine + 1-butanol due to geometrical packing or dispersion forces of different species.