Growth of Ice Crystals in the Presence of Type III Antifreeze Protein


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Maddalena.Bayer [ at ] awi.de

Abstract

The morphology and growth kinetics of ice single crystals in aqueous solutions of type III antifreeze protein (AFP-III) have been studied in detail over a range of AFP-III concentrations and supercoolings. In pure water, the shape of ice crystals changes from the circular disklike to planar dendritic with increasing supercooling. In AFP-III solutions, ice crystals in the form of faceted plates, irregular dendrites with polygonized tips, and needles appear with increasing supercooling and AFP-III concentration. The growth rate of ice crystals in the crystallographic a direction is 2 orders of magnitude higher than that in the c direction. AFP-III molecules cause the stoppage of the growth of the prismatic and basal faces at low supercoolings. When supercooling exceeds the critical value, AFP-III favors the acceleration of the growth in both a and c directions. The observed behavior of AFP-III is explained in terms of the Cabrera-Vermilyea pinning model and the specificity of the dissipation of latent heat from the growing crystals with different shapes.



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ISI/Scopus peer-reviewed
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Published
Eprint ID
47033
DOI 10.1021/acs.cgd.8b00172

Cite as
Vorontsov, D. A. , Sazaki, G. , Titaeva, E. K. , Kim, E. L. , Bayer-Giraldi, M. and Furukawa, Y. (2018): Growth of Ice Crystals in the Presence of Type III Antifreeze Protein , Crystal Growth & Design, 18 , pp. 2563-2571 . doi: 10.1021/acs.cgd.8b00172


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