Abstract
Nanostructured composite coatings, consisting of phylosilicates embedded within polymer matrices, were prepared and characterized. Waterborne acrylic and polyurethane resins were employed as matrix, and hydrophilic or organically modified nanoparticles of montmorillonite as reinforcement. Emphasis in this article is put on the preparation of the coating. An overview of the major steps involved is presented. The choice of a suitable solvent for the preparation stage is based on the values of the solubility parameters of the constituents. The characterization techniques that are used include X-ray diffraction analysis, gas permeation measurements, and IR spectroscopy. The results highlight the significance of the selection of appropriate ingredients and the knowledge of the interactions between the clay particles, the organic matrix, and the solvents used for the preparation of the coating.
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Acknowledgments
This research was partially supported by the program THALIS “NAMCO” #681135, which was financed by the European Union (European Social Fund) and Greek national funds (Program \(\text {E} \Sigma \Pi \text {A}\)). Collaborations on the subject of gas permeation through nanocomposites have been had with Prof. Reinhard Krause-Rehberg of the Martin Luther University of Halle-Wittenberg to whom we are grateful. We would also like to thank Prof. G. Chalepakis and Dr. A. Siakouli of the University of Crete for the TEM images, and Prof. Noni Maravelaki of the School of Architecture of the Technical University of Crete for her help with the IR measurements and their interpretation.
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Stratigaki, M., Choudalakis, G. & Gotsis, A.D. Gas transport properties in waterborne polymer nanocomposite coatings containing organomodified clays. J Coat Technol Res 11, 899–911 (2014). https://doi.org/10.1007/s11998-014-9594-7
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DOI: https://doi.org/10.1007/s11998-014-9594-7