Apparent Molar Volumes and Viscosity B-Coefficients of Carbohydrates in Aqueous Cetrimonium Bromide Solutions at (298.15, 308.15, and 318.15) K

Apparent molar volumes (phi(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) (C(19)H(42)BrN) solutions have been determined from solution density, rho, 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 (phi(0)(V)) and experimental slopes (S(nu)*) 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 (delta(2)phi(0)(V)/delta T(2))(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.