THE THERMODYNAMICS OF THE PLANAR CRYSTAL NUCLEI FORMATION AT THE LIQUID — AIR INTERFACE

  • Valeriy A. Postnikov
Keywords: Gibbs free energy, surface tension, crystal nucleation, anthracene, naphthalene, air – liquid interphase, solution.

Abstract

The paper is devoted to the thermodynamic study of the large flat organic compounds
(naphthalene, anthracene) single crystals formation from the solution at the liquid — air interface.
The free Gibbs energy changes of flat nuclei formation at liquid — air interface has been analyzed.
The crystal nucleus critical size lс, hс and work of his formation Ас was defined for naphthalene
example.
It has been founded that the possibility of crystals formation and growth on the surface of
the liquid — air is determined by the sign of the wetting parameter Δσ. The crystal nuclei formation
condition depending on the concentration and temperature factors has been analyzed. The presented
results are significant for the theory and practice of organic single crystals growth.

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Author Biography

Valeriy A. Postnikov

Cand. Sci. (Chem.), Associate
Professor, doctoral of the Physics and Physical Materials
Science Department, Donbas National Academy of Civil
Engineering and Architecture; ph.: +38 (0622) 901502,
е-maile: postva@yandex.ru

References

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Published
2014-12-25
How to Cite
Postnikov, V. A. (2014). THE THERMODYNAMICS OF THE PLANAR CRYSTAL NUCLEI FORMATION AT THE LIQUID — AIR INTERFACE. Kondensirovannye Sredy I Mezhfaznye Granitsy = Condensed Matter and Interphases, 16(4), 486-490. Retrieved from https://journals.vsu.ru/kcmf/article/view/864
Section
Статьи