Nanocomposites and nanomaterials

Eco- and biocompatibility of nano Ti, Mo, Zn coated chitosan film for medicine and electronics
Kalinkevich O.V., Karpenko O.Yu., Zinchenko Ye.I., Kalinkevich A.N., Baturin V.A., Danilchenko S.N.
Institute for applied physics of National Academy of sciences of Ukraine. Petropavlovskaya Str., 58, Sumy, Ukraine
E-mail: kalinkevich@gmail.com

Materials based on natural polymers with nanoscale metal coatings can be used to create biosensors, flexible green electronics, etc [1]. They can also have a good shielding effect and provide protection for a person from negative factors, have antibacterial properties [2]. In our work, Ti, Mo, Zn containing coatings on chitosan films were obtained. The coatings were deposited on the chitosan film (300 kDa, deacetilation degree 87%) by magnetron sputtering using various carrier gases (nitrogen, oxygen) or vacuum. Coating thickness was 10-30 nm. The possibility to form coatings without destruction of the chitosan film and a significant change in its basic properties (swelling, degradability, etc.) was demonstrated.

Fig. 1 TiO-coated chitosan film (top left) after 12 day degradation in soil.

Films degrade in biological media (SBF) and soil in 5-12 days. Chitosan films with TiO, Mo, Zn, ZnO coatings are characterized by high transmittance of light at 600 nm (49.5 -63.1%).

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2.	Foster L.J.R., Ho S., Hook J., Basuki M., Marçal H. Chitosan as a biomaterial: influence of degree of deacetylation on its physicochemical, material and biological properties // PLoS ONE.-2015.-10(8).-e0135153.