Thermodynamics Research Center / ThermoML | Journal of Chemical and Engineering Data

ABSTRACT

Apparent molar volumes (V) and viscosity B-coefficients for some carbohydrates (d-glucose, d-mannitol, and d-sucrose) in (0.001, 0.003, and 0.005) mol*kg-1 aqueous cetrimonium bromide (N-cetyl-N,N,N-trimethyl ammonium bromide) (C19H42BrN) solutions have been determined from solution density, ?, and viscosity, ?, measurements at (298.15, 308.15, and 318.15) K as a function of the concentration of carbohydrates. The limiting apparent molar volume (V0) and experimental slopes (Sv*) obtained from the Masson equation have been interpreted in terms of solute-solvent and solute-solute interactions, respectively. The viscosity data were analyzed using the Jones-Dole equation, and the derived parameters A and B have also been interpreted in terms of solute-solute and solute-solvent interactions, respectively, in the mixed solutions. The structure-making or -breaking ability of carbohydrates has been discussed in terms of the sign of (d2fV0/dT2)P as well as dB/dT. The three-dimensional representation of the investigated molecules concerned with this paper is shown below for a better understanding.