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EXTENDED PHASE DIAGRAMS FOR THE TERNARY SOLUTIONS WATER-SODIUM CHLORIDE-GLYCEROL AND WATER-SODIUM CHLORIDE-HYDROXYETHYLSTARCH (HES) DETERMINED BY DSC.

Author(s) : JOCHEM M., KORBER C.

Type of article: Article

Summary

PHASE TRANSFORMATIONS OCCURRING IN THE SOLUTIONS WATER-SODIUM CHLORIDE-GLYCEROL AND WATER-SODIUM CHLORIDE-HES UNDER NONEQUILIBRIUM COOLING AND HEATING CONDITIONS WERE EXAMINED USING THE DSC METHOD. MAINLY, GLASS TRANSITION, DEVITRIFICATION, EUTECTIC MELTING, AND PRIMARY ICE MELTING WERE EVALUATED TO YIELD DATA FOR THE STABILITY OF THE AMORPHOUS PHASES AS WELL AS FOR THE COMPOSITION INSIDE THE RESIDUAL SOLUTION WHICH REMAINS AFTER CRYSTALLIZATION. IT WAS FOUND THAT FOR A LOT OF INITIAL COMPOSITIONS AND COOLING/HEATING CONDITIONS USED IN CRYOBIOLOGY ONLY PRIMARY ICE CRYSTALLIZATION OCCURS. THEREFORE THE DESCRIPTION OF THE TERNARY PHASE-CHANGE BEHAVIOUR MAY BECOME EVEN MORE SIMPLE FOR NONEQUILIBRIUM CONDITIONS THAN IN THE CASE OF ASSUMED EQUILIBRIUM. THE RESULTS WERE USED TO MODIFY AND EXTEND THE EQUILIBRIUM PHASE DIAGRAMS TO MAKE THEM APPLICABLE TO PROBLEMS WITH BOUNDARY CONDITIONS.

Details

  • Original title: EXTENDED PHASE DIAGRAMS FOR THE TERNARY SOLUTIONS WATER-SODIUM CHLORIDE-GLYCEROL AND WATER-SODIUM CHLORIDE-HYDROXYETHYLSTARCH (HES) DETERMINED BY DSC.
  • Record ID : 1988-1675
  • Languages: English
  • Source: Cryobiology - vol. 24 - n. 6
  • Publication date: 1987

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