Thermodynamics Research Center / ThermoML | Journal of Chemical Thermodynamics

ABSTRACT

Transport and NMR relaxation studies are significant in understanding the molecular interactions of polyhydroxy solutes with amino acids in aqueous solutions. Jones Dole viscosity B-coefficients for (+)-D-mannose, D-mannitol, 6-deoxy-D-mannose, (+)-methyl a-D-mannopyranoside, (+)-D-glucose, (+)-maltose monohydrate, and (+)-cellobiose have been measured in (0.05, 0.15, 0.25, 0.35, and 0.50) mol kg 1 L-glycine(aq) solutions by means of viscosity measurements at (288.15, 298.15, 308.15, and 318.15) K, at the pressure p = 0.1 MPa. These data were used to calculate the Jones Dole B-coefficients, the differences DB = B{in L-glycine(aq) solution} B{in water}, the temperature dependence of B-coefficients (dB/dT), and interaction coefficients. These results are important for understanding solute cosolute (L-glycine) interactions. Proton nuclear spin lattice relaxation rates R1 for polyhydroxy solutes were also measured in (0.05, 0.15, 0.25, 0.35, and 0.50) mol kg 1 L-glycine solutions prepared in {9:1 (w/w) H2O + D2O} at T = 300 K in order to unravel the interactions in these ternary solutions.