Sturcture of Pyrolytic Products of Polyacrylonitrile

The structural features of pyrolytic products of polyacrylonitrile(PAN) at different pyrolytic temperatures have been studied by elemental analysis, IR, X\|ray diffraction, ESR, 13 C NMR. The results show the pyrolytic products of PAN finally have unsaturated ladder\|shaped structure of conjugated poly\|cyclic aromatics.