- Cocks, F.H. and Hildebrandt, W.H. and Shepard, M.L., Comparison of the low-temperature crystallization of glasses in the ternary systems H2O-NaCl-dimethyl sulfoxide and H2O-NaCl-glycerol [biological freeze-thaw damage],
J. Appl. Phys. (USA), vol. 46 no. 8
pp. 3444 - 8 .
(last updated on 2007/04/10)
In order to study freeze-thaw damage processes which can occur in biological materials, the authors have used differential thermal analysis to study crystallization processes in some unstable glassy phases formed during freezing. They have shown that dimethyl sulfoxide depresses the freezing point of water-NaCl solutions more than glycerol. The glass content formed in the freezing process is a function of the water content. The glasses appear to form from the eutectic liquid that is left after crystallization. The activation energy for both systems is 13 kcal mole-1
biology;crystallisation;freezing;organic compounds;sodium compounds;vitreous state;