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Characterization of coating systems.

Linda A Felton1

  • 1University of New Mexico, College of Pharmacy, Albuquerque, NM 87131, USA. lfelton@unm.edu

AAPS Pharmscitech
|January 10, 2008
PubMed
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This study details experimental techniques for evaluating polymeric film coatings. These methods assess critical properties like permeability, thermal, mechanical, and adhesive characteristics for diverse applications.

Area of Science:

  • Materials Science
  • Polymer Science
  • Surface Science

Background:

  • Polymeric film coatings serve decorative, protective, and functional roles on solid substrates.
  • Evaluating coating performance requires understanding polymer film properties.
  • Standardized assessment methods are crucial for formulation, substrate, and processing optimization.

Purpose of the Study:

  • To present a comprehensive overview of experimental techniques for characterizing polymeric films.
  • To provide methods for assessing key properties of both free-standing and applied polymer films.
  • To highlight techniques for investigating interfacial interactions in coated systems.

Main Methods:

  • Experimental techniques for determining water vapor and oxygen permeability.

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  • Methods for evaluating thermal and mechanical properties (e.g., tensile strength, glass transition temperature).
  • Assessment of adhesive characteristics and interfacial interactions using various analytical approaches.

    • Main Results:

    • Established experimental protocols allow for quantitative measurement of critical film properties.
    • The techniques enable differentiation between various coating formulations and processing conditions.
    • Interfacial interactions can be effectively probed to understand film-substrate behavior.

    Conclusions:

    • The described experimental techniques provide a robust framework for the comprehensive evaluation of polymeric film coatings.
    • Accurate characterization of film properties is essential for optimizing coating performance and application suitability.
    • Understanding interfacial phenomena is key to developing advanced functional coatings.