engleski

Analysis of physical and mechanical characteristics of functional coatings with fragranced microcapsules

In graphic and printing industry coatings are applied on the surface of different materials for providing decorative, protective and/or functional characteristics of prints. In order to produce functional coatings with various scents, and thus enabling value-added printed products, fragranced microcapsules, which can be applied onto different substrate materials, are often added. Functionality, i.e. activation of fragranced microcapsules is achieved by rubbing the surface of the functional coating (use of specific amount of pressure and shear force), under which microcapsules’ shells rupture, releasing the encapsulated fragrance. This research aims to investigate the physical and the mechanical properties of produced functional coatings using water-based varnish and different concentrations of fragranced microcapsules in it. The amount of added fragranced microcapsules strongly affects the functionality of the applied coating. Conducted SEM (scanning electron microscopy) and nanoindentation analyses of the applied functional coatings revealed that different concentrations of added fragranced microcapsules in water-based varnish, significantly affected both physical and mechanical characteristics of the prints.

functional coatings ; fragranced microcapsules ; nanoindentation

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