The Dilution Enthalpies Of L-prolinol In Pure Water And Aqueous DMF Solutions

The dilution enthalpies of L-proline and N,N-dimethylformamide in pure water have been determined by using the TAM-2277 flow-mix microcalorimetric system at 298.15 K. According to the McMillan-Mayer theory, the enthalpic pair coefficient and triplet interaction coefficient have been calculated. The results were interpreted in terms of interactions between solutes and between solute and solvent. The dilution enthalpies of L-prolinol in water and aqueous N,N-dimethylformamide solutions have been measured at 298.15 K. A pseudo phase equilibrium model for L-prolinol in aqueous solutions was established. The enthalpic pair interaction coefficients and the molar enthalpies of the association of L-prolinol have been evaluated from the analysis of the experimental data according to the model equation. The results were discussed in terms of the hydrophobic interaction and the interactions between the solvated solutes.