The local atomic and electronic structure of PANI / Cu nanocomposite was studied by X-ray absorption spectroscopy. It was found that as a result of the formation of a nanocomposite, the polymer chain is transformed by π electronic subsystem and changes local structure of copper. Polyaniline in composite is partially oxidized and protonated.

Keywords: polyaniline, polymer-inorganic composites, X-ray absorption spectroscopy, electronic structure, conductive polymers