Synthesis, Structure, and Properties of Composite Material Based on Polydiphenylamine and Cobalt Nanoparticles

摘要

It was shown for the first time, that while polydiphenylamine (PDPhA) is IR heated in presence of cobalt (Ⅱ) acetate Co(CH_3CO_2)_2·4H_2O in an inert atmosphere under IR radiation (T= 250-600 ℃), growth of the polymer chain occurs. It was found that growth of polymer chain occurs due to condensation of crystalline oligomers of diphenylamine with hydrogen emission, which contributes to reduction of Co~(2+) to Co~o. As a result metal-polymer nanocomposite based on PDPhA and Co nanoparticles, formation of which is proved by X-ray analysis and transmission electron microscopy, is formed. Co nanoparticles have size 2 ＜ d ＜ 8 nm. Magnetic properties of Co/PDPhA nanocomposite were studied. It was found that the obtained composite material is superparamagnetic.