Novel Hybrid Metal-Polymer Nanocomposite Magnetic Material based on Polyphenoxazine and Co-Nanoparticles

During the IR heating of polyphenoxazine (PPhOA) in presence of cobalt (II) acetate Co(CH₃CO₂)₂4H₂O in the inert atmosphere at the temperature T = 500–650°C the growth of the polymer chain via condensation of phenoxazine oligomers happens simultaneously with the dehydrogenation with the formation of conjugated C=N bonds. Hydrogen emitted during these processes contributes to the reduction of CO₂ ⁺ to Co°. As a 66result the nanostructured composite material in which Co-nanoparticles are dispersed into the polymer matrix is formed. According to TEM Co-nanoparticles have size 4 < d < 14 nm. The investigation of magnetic and thermal properties of Co/PPhOA nanocomposite has shown that the obtained nanomaterial is superparamagnetic and thermally stable.