NANOCOMPOSITE MATERIAL WITH BIOLOGICAL ACTIVITY Russian patent published in 2017 - IPC C09D5/14 B82B3/00 C08J5/18 

FIELD: nanotechnology.

SUBSTANCE: nanocomposite material with biological activity includes a substrate of a biocompatible polymer, preferably polytetrafluoroethylene or polyethylene terephthalate having a nanostructured surface as a result of its etching by tetrafluoromethane ion fluxes to form a rms roughness Rq of 5-200 nm, with the surface relief of the substrate being modified with a carbon-containing nanoscale film obtained ion-stimulated precipitation in a vacuum from cyclohexane. It is new that the carbon-containing film modifying agent, which is obtained by precipitation from a plasma-forming mixture of tetrafluoromethane and cyclohexane, additionally contains fluorine in a weight ratio to carbon in the range of 0.5 to 1.3, and the relief of the nanostructured substrate surface is formed by projections spaced apart by distance 0.3-1.0 mcm, whose height is at least twice the radius of their base, the modifying film containing fluorine and carbon in the following mass ratio of 32-55% and 65-42%, respectively.

EFFECT: proposed technical solution completely eliminated the adhesion of microorganisms on the surface of nanostructured material, the superhydrophobicity of which was achieved due to the optimized content of fluorine and carbon on a given nano-relief of the substrate surface, and the resulting optical transparency of the material in the visible spectral range ensured suitability for use in polytronics.

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