Kinetics of Dissolution of an Amorphous Solid

The kinetics of dissolution of an amorphous solid is studied using a simple model of a glass that captures with reasonable accuracy the dynamic heterogeneities associated with the relaxation of an amorphous material at low temperatures. The intrinsic dissolution rate is shown to be proportional to t...

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Bibliographic Details
Published in:The journal of physical chemistry. B 2018-03, Vol.122 (8), p.2425-2433
Main Authors: Douglass, Ian, Harrowell, Peter
Format: Article
Language:English
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Summary:The kinetics of dissolution of an amorphous solid is studied using a simple model of a glass that captures with reasonable accuracy the dynamic heterogeneities associated with the relaxation of an amorphous material at low temperatures. The intrinsic dissolution rate is shown to be proportional to the concentration of surface particles kinetically able to exchange with the solvent, independent of temperature or the thermal history of the glass. The morphology of the dissolving surface is described, and the possibility of using surface etching to image dynamic heterogeneities is explored.
ISSN:1520-6106
1520-5207
DOI:10.1021/acs.jpcb.7b12243