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Related Experiment Videos

Continuum model for mesh crystallization.

Alexander Tetervak1, Stephen Hudson, Jizhong Zhang

  • 1Department of Physics and Astronomy, The University of Western Ontario, London, Ontario, Canada N6A 3K7.

Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
|August 11, 2005
PubMed
Summary

Simultaneous crystallization of multiple domains, common in organic compounds like alkanes, creates meshlike aggregates. This study reveals distinct banded growth within these structures when using kinetic inhibitors during alkane precipitation.

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Area of Science:

  • Materials Science
  • Chemical Engineering
  • Physical Chemistry

Background:

  • Single crystallizing domain growth is well-understood.
  • Multicrystalline, meshlike aggregates form from simultaneous domain growth in organic compounds.
  • Kinetic inhibitors significantly impact crystallization kinetics and morphology.

Purpose of the Study:

  • To investigate the simultaneous growth of multiple crystallizing domains in normal alkanes.
  • To analyze the effect of kinetic inhibitors on the morphology of multicrystalline aggregates.
  • To model the observed banded growth phenomenon.

Main Methods:

  • Studied normal alkane precipitation from solution.
  • Introduced trace amounts of kinetic inhibitors.

Related Experiment Videos

  • Observed and analyzed the resulting aggregate structure and growth patterns.

    • Main Results:

    • Identified a distinct banded growth pattern superimposed on a finer mesh structure.
    • Observed a typical length scale of 300 microm for the banded growth.
    • Demonstrated the essential behavior of this growth using a simple continuum model.

    Conclusions:

    • Kinetic inhibitors induce unique banded growth in multicrystalline alkane aggregates.
    • A continuum model can effectively represent the observed complex growth behavior.
    • Understanding multicrystalline growth is crucial for organic compound crystallization processes.