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Powder dynamic contact angle data in the pharmaceutical industry.

Pepin1, Blanchon, Couarraze

  • 1Department of Chemical Engineering, University College London, Torrington Place, London, WC1 7JE UK.

Pharmaceutical Science & Technology Today
|May 14, 1999
PubMed
Summary

Dynamic contact angle (DCA) analysis provides crucial physicochemical data for product development. This straightforward wettability assay, now adapted for powders, offers a more efficient method for determining surface energy and predicting product quality.

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Area of Science:

  • Physical Chemistry
  • Materials Science
  • Pharmaceutical Sciences

Background:

  • Physicochemical data are essential for formulation scientists in process modeling and quality prediction.
  • Surface energy, indicated by contact angles, significantly impacts substance processability and bioavailability.
  • Accurate wettability data is critical for optimizing formulation processes.

Purpose of the Study:

  • To highlight the importance of contact angle measurements in formulation science.
  • To introduce Dynamic Contact Angle (DCA) analysis as a key method for wettability assessment.
  • To demonstrate the efficiency and applicability of DCA analysis for powders.

Main Methods:

  • Dynamic Contact Angle (DCA) analysis was employed as the primary wettability assay.

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  • The method was adapted for the specific analysis of powdered substances.
  • Comparison with other wettability determination methods was performed.

    • Main Results:

    • DCA analysis provides straightforward and valuable wettability data.
    • The adaptation of DCA for powders allows for efficient analysis of these materials.
    • DCA analysis proved to be more efficient than alternative methods for powder wettability determination.

    Conclusions:

    • Dynamic Contact Angle analysis is a powerful tool for formulation scientists.
    • Its application to powders enhances the prediction of processability and bioavailability.
    • DCA offers a more efficient approach to wettability determination compared to existing techniques.