NON EQUILIBRIUM ICE CRYSTALLIZATION IN AQUEOUS SOLUTIONS : COMPARISON WITH THEORY, CASE OF SOLUTIONS OF POLYALCOHOLS WITH FOUR CARBONS, ABILITY TO FORM GLASSES, COMPOUNDS FAVORING CUBIC ICEReport as inadecuate




NON EQUILIBRIUM ICE CRYSTALLIZATION IN AQUEOUS SOLUTIONS : COMPARISON WITH THEORY, CASE OF SOLUTIONS OF POLYALCOHOLS WITH FOUR CARBONS, ABILITY TO FORM GLASSES, COMPOUNDS FAVORING CUBIC ICE - Download this document for free, or read online. Document in PDF available to download.



Abstract : The glass-forming tendency on cooling from room temperature to very low temperatures and the stability of the wholly amorphous state an rewarming have been measured on aqueous solutions of 4 carbons polyalcohols. For same solutes concentrations, 1,3-butanediol most favours the vitreous state, almost as well as 1,2-propanediol, the most efficient known till now. New solutions will be available for cryopreservation of cells by complete vitrification. The kinetics of ice crystallization have been compared with a theoretical model both on cooling and on rewarming, for the present solutions as well as for previously studied solutions. There is a very good agreement. 1,2- and 1,4-Butanediol surprisingly favour cubic ice crystallization.





Author: P. Boutron P. Mehl

Source: https://hal.archives-ouvertes.fr/



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