NANODISPERSED METAL AND METAL-OXIDE PARTICLES IN POLYMERIC MATRICES FROM POLYACRYLONITRILE PRECURSORS

Two ways of the colloid formation of metals and metal oxides in the po lyacrylonitrile (PAN) and its copolymer (1.5 wt % of itaconic acid) (P AN-I) have been studied. The thermal decomposition of W, Mo and Cr car bonyl complexes with PAN, prepared by the interaction of PAN nitrile g roups with VI B group metal hexacarbonyls has been investigated. The t hermolysis under air leads to a formation of metal oxide particles. Fo r the Cr-containing PAN, the presence of dispersed Cr2O3 with a size l ess than 3 nm was estimated by ESR. Co-containing polymers were prepar ed by mixing Co-2(CO)(8) with PAN-I in DMF. It was found that Co-2(CO) (8) interacts with DMF giving salt [Co(DMF)(6)](2+)[Co(CO)(4)](-)(2). By ferromagnetic resonance and SAXS, colloid size depends on thermolys is conditions and loading of the Co complex and varies from 1 to 10 nm .