HYBRID METAL-POLYMER NANOCOMPOSITES BASED ON
POLYPHENOXAZINE AND COBALT NANOPARTICLES
Galina Petrovna Karpacheva, Sveta Zhiraslanovna Ozkan, Ella Leont’evna Dzidziguri, Petr Aleksandrovich Chernavskii, Igor Sergeevich Eremeev, Mikhail Nikolaevich Efimov, Mikhail Ivanovich Ivantsov, Galina Nikolaevna Bondarenko.
It was shown for the first time, that after IR heating of polyphenoxazine in the presence of cobalt(II) acetate Co(CH3CO2)2·4H2O in the inert
atmosphere at the temperature of 450–650 °C, the growth of the polymer chain via the condensation reaction of phenoxazine olygomers
happens simultaneously with the dehydrogenation of phenyleneamine structures with the formation of conjugated C=N bonds. Hydrogen
emitted during these processes contributes to the reduction of Co2+ to Co0
. As a result 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/polyphenoxazine nanocomposite has shown that the obtained nanomaterial is
superparamagnetic and thermally stable.
Key words: polymers with a polyconjugated system; polyphenoxazine; IR heating; Co nanoparticles; metal-polymer nanocomposite;
hybrid magnetic nanomaterial.