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Modeling Pendular Liquid Bridges with a Reducing Solid-Liquid Interface.

Pepin1, Rossetti, Simons

  • 1Colloid and Surface Engineering Group, Department of Chemical Engineering, University College London, Torrington Place, London, WC1 7JE, UK

Journal of Colloid and Interface Science
|December 1, 2000
PubMed
Summary
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This study models liquid bridges between particles, improving wet granulation models by accounting for interfacial energies and wetting hysteresis. The findings predict solid-liquid area reduction during receding liquid bridges.

Area of Science:

  • Materials Science
  • Chemical Engineering
  • Physical Chemistry

Background:

  • Liquid bridges between dissimilar particles are crucial in powder handling and wet granulation.
  • Existing models often oversimplify liquid bridge behavior and contact angles, neglecting wetting hysteresis.

Purpose of the Study:

  • To propose a simple model for liquid bridge evolution based on interfacial energies.
  • To accurately predict the reduction of solid-liquid interfacial area during receding liquid bridges.

Main Methods:

  • Developed a model based on interfacial energies to describe receding liquid bridges.
  • Approximated liquid bridge shape using a parabolic curve.
  • Validated the model by comparing measured and calculated contact angles and liquid-vapor interfacial area.

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Main Results:

  • The model accurately describes the receding process of liquid bridges.
  • The balance between adhesion and capillary energy governs the reduction of solid-liquid interfacial area.
  • Predicted solid-liquid interfacial area reduction based on initial liquid bridge configuration.

Conclusions:

  • The proposed model offers a more accurate representation of liquid bridge evolution in powder systems.
  • Understanding liquid bridge dynamics is vital for optimizing processes like wet granulation.
  • Interfacial energy considerations are key to predicting liquid bridge behavior and stability.