Organic–inorganic hybrid nanocomposites are materials whose chemical and physical properties are tailored by association of organic and inorganic moieties at the nanometer scale. The organic–inorganic nanocomposites exhibit additional characteristics over those of conventional single-phase polymer materials, and therefore have a wide range of applications in fields such as: optics, electrics, biology, catalysis etc.

The paper presents research concerning the obtaining of composite coating nanomaterials for wood finishing and bio-protection. The new nanocomposites, consisting of a hybrid of organic and inorganic nanomaterials, are based on functionalized acrylic copolymers in water dispersion with ZnO nanoparticles obtained by sol-gel process.

The presence of acrylic copolymers in water emulsion (based on monomers ethyl acrylate, butyl acrylate, acrylonitrile) and ZnO nanoparticles enables the formation of a crosslinked nanometric network of inorganic and organic domains, put into evidence by AFM analysis. The interphase characterization of the nanostructured materials synthesised was performed using FT-IR.

The obtained nanocomposites can be used as coating materials with improved properties of wood coating systems such as scratch resistance (scrub tester) and specific wood finishing characteristics.

Considering the biocide activity, both for acrylic copolymers and ZnO nanoparticles, the obtained nanocomposites were biologically investigated and proposed as wood preservation agents.

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