Rhythmic crystallization of ascorbic acid precipitated from its methanol solutions

As an example of the formation of dissipative structures, appearance of rhythmic crystallization during precipitation of ascorbic acid from its methanol solution is reported. In this system, regular concentric rings of large and small pitches were observed. The branching process by the Mullins-Seker...

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Bibliographic Details
Published in:Journal of colloid and interface science 1984-01, Vol.102 (2), p.477-482
Main Authors: Iwamoto, Kazutoshi, Mitomo, Shun-Ichi, Seno, Manabu
Format: Article
Language:English
Subjects:
Chemistry
Colloidal state and disperse state
Exact sciences and technology
General and physical chemistry
Physical and chemical studies. Granulometry. Electrokinetic phenomena
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Summary:As an example of the formation of dissipative structures, appearance of rhythmic crystallization during precipitation of ascorbic acid from its methanol solution is reported. In this system, regular concentric rings of large and small pitches were observed. The branching process by the Mullins-Sekerka instability proceeds autocatalytically, and the hypothesis of a hysteresis relation of the number of branched crystals to the degree of supersaturation is proposed and therefrom the rhythmic crystallization will be explained.
ISSN:0021-9797
1095-7103
DOI:10.1016/0021-9797(84)90250-9