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Crystalline and Amorphous Phases in the Ternary System Water−Sucrose−Sodium Chloride

1996; American Chemical Society; Volume: 100; Issue: 4 Linguagem: Inglês

10.1021/jp951052r

1541-5740

Evgenyi Shalaev, Felix Franks, Patrick Echlin,

Crystallization and Solubility Studies

The glass transitions, softening points, devitrification, and melting have been determined by differential scanning calorimetry for the ternary system water−sucrose−sodium chloride over the accessible composition range. X-ray diffraction was used to identify the devitrification in freeze-dried samples. Devitrification is due to NaCl crystallization from the wholly amorphous mixtures and of sucrose or the ternary compound sucrose. NaCl·2H2O in the crystalline freeze-dried mixtures. The part of the solid/liquid state diagram with glass transitions and softening temperature surfaces and the line of the "maximally" freeze-concentrated solutions are represented as projections on the composition triangle.