and hence are considered
to have superior antibacterial activity. Copper oxide is cheaper than
silver, easily miscible with polymers and possesses good chemical
and physical stability [19]. These inorganic materials can be used
in different forms: powders, coatings on cellulose fibers, nanocomposite
coatings and thin films [20,21]. Antimicrobial coatings are
of great interest for the protection of surfaces, since the survival
of microorganisms on surfaces in the environment can lead to the spread of diseases. In addition, coatings are expected to have better
safety and stability, while nanopowders may be hazardous to
human health due to the risk of inhalation [20]. The antibacterial
properties of metallic nanoparticles can be applied in a variety of
fields such as medical treatment and devices, water treatment and
food processing [15]. Therefore, the development of nanostructured
coatings with antimicrobial properties is of prime importance
[20].