A hydrophobic PTFE solid material has been grafted with acrylic acid (AAc) via exposure to a dose of 20 kGy gamma radiation. The obtained hydrophilic solid (PTFE-g-PAAc) was impregnated with a solution containing a known amount of nitrate of cobalt, copper, ferric or nickel. The extent of loading of metal species was fixed at 16 wt.-%, expressed as metal oxide. DTA, XRD, LR and catalysis of CO-oxidation reaction with oxygen have been carried out on the various prepared solids. The results obtained revealed that PTFE melts at 355 degrees C, PAAc in the grafted PTFE melts at 230 degrees C. The presence of cobalt or copper species considerably modified these temperatures; as a result of their complete participation in metal-polymer complexes formation. This effect was much less pronounced in the case of nickel and iron cations. Very strong exothermic peaks were detected in the DTA curves at 260-290 degrees C for Fe, Co, Cu species and at 340 degrees C for Ni species. These strong peaks characterize the thermal decomposition of the metal polymer complex with subsequent formation of free amorphous metal oxide. The catalytic activities measured at 200 degrees C for different solids heated in vacuum at 240 degrees C have been found to vary in the following sequence : Co > Cu much greater than Fe > Ni. These results were attributed to the extent of different transition metal cations involved in the metal-polymer complex formation, their thermal stability, and the specific activity of the produced corresponding metal oxides.