Abstract
The paper presents the possibility of obtaining poly(vinyl alcohol)-based coatings containing zinc oxide nanoparticles. The research part has been divided into three steps. At the beginning, nanometric zinc oxide was produced by the hydrothermal method and its physicochemical properties were characterized. The second part of the research included the creation of a reference composition. Next, three independent variables were determined: the mixing temperature of composites, the concentration of glycerine and the concentration of nanometric zinc oxide that could affect the properties of products. In the last stage, the compositions were tested for physicochemical, utility and microbiological properties. Based on the conducted tests it was found that the composites have antimicrobial properties. Nanocrystalline zinc oxide is eluted from the composites in trace amounts and thus the products are safe for the environment. Among the independent variables, only the temperature affects utility properties of the obtained products. A product with the best functional properties is intended to be applied in a suspension form on the surface that is microbially infected and, after its solidification, it can be removed together with dead biological material.
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