Supercooling behavior in aqueous solutions.
Using the emulsion method, we measured the homogeneous nucleation temperature depression, DeltaT(f,hom), and equilibrium melting points depression, DeltaT(m), of various aqueous solutions and then calculated lambda for each solute using the linear relationship DeltaT(f,hom) = lambdaDeltaT(m). We defined lambda as the solute-specific supercooling capacity and examined its correlation with some known hydration characteristics. The results showed that lambda is correlated with D0, the self-diffusion coefficient of solute molecules in infinite dilution.
Kimizuka
Norihito
N
Department of Food Science and Technology, Tokyo University of Marine Science and Technology, 4-5-7 Konan, Minato-ku, Tokyo 108-8477, Japan.
Suzuki
Toru
T
D001703:Biophysics / Q000379:methods; D002152:Calorimetry, Differential Scanning; D002627:Chemistry, Physical / Q000379:methods*; D004058:Diffusion; D006601:Hexoses / Q000737:chemistry*; D009821:Oils; D012825:Silicon / Q000737:chemistry; D012996:Solutions; D012997:Solvents; D013228:Stearates / Q000737:chemistry*; D013696:Temperature; D013816:Thermodynamics; D014867:Water / Q000737:chemistry*
D006601:Hexoses; D009821:Oils; D012996:Solutions; D012997:Solvents; D013228:Stearates; D014867:Water; C519233:sorbitan tristearate; D012825:Silicon