Thermodynamics Research Center / ThermoML | Thermochimica Acta

ABSTRACT

Solution densities and speeds of sound of tripeptide (gly(gly)2) in aqueous and aqueous glucose solutions have been determined at temperatures: 288.15, 293.15, 298.15, 303.15 and 308.15 K. These solution densities and speeds of sound were used to calculate apparent molar volume at infinite dilution transfer partial molar volume apparent molar adiabatic compressibility at infinite dilution and its transfer values at infinite dilution. These parameters have been discussed in terms of solutesolvent interactions. We have also attempted to examine the temperature and concentration dependence of such interactions. Contributions of peptide group (-CONHaqueous solution at 298.15 K are also estimated by comparing with the data in the literature and of -amino acids. Also group contributions to transfer volumes at temperatures: 288.15, 298.15 and 308.15 K from water to aqueous glucose solutions have also calculated.