Comparison of the low-temperature crystallization of glasses in the ternary systems H2 O-NaCl-dimethyl sulfoxide and H2 O-NaCl-glycerol
Differential thermal analysis studies have resulted in quantitative evaluation of the transformation kinetics of unstable glassy phases formed during cooling of solutions from equivalent isoplethal sections in the H 2O-NaCl-dimethyl-sulfoxide (DMSO) and H2O-NaCl-glycerol ternary systems. These ternary systems are of particular importance in the field of cryobiology, where knowledge of glassy phases may be especially crucial for long-term storage of biological materials at cryogenic temperatures. Activation energies for devitrification of glasses in both systems have been determined to be approximately 13 kcal/mole. The glasses were found to have approximately equal long-term stabilities. The DMSO-containing glasses appear to be more complex than glycerol-containing glasses because of the occurrence of a relatively high-temperature ternary eutectic reaction. The study of these systems appears to be a unique area for the cooperation of physical and biological scientists.
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- Applied Physics
- 51 Physical sciences
- 49 Mathematical sciences
- 40 Engineering
- 09 Engineering
- 02 Physical Sciences
- 01 Mathematical Sciences
Citation
Published In
DOI
ISSN
Publication Date
Volume
Issue
Start / End Page
Related Subject Headings
- Applied Physics
- 51 Physical sciences
- 49 Mathematical sciences
- 40 Engineering
- 09 Engineering
- 02 Physical Sciences
- 01 Mathematical Sciences