RADICALS GENERATED FROM THERMALLY -TREATED POLY(ARYL-ETHER-KETONE) COPOLYMERS CONTAINING  1,5-NAPHTHALENE MOIETIES STUDIED BY ESR SPECTROSCOPY
DONG Feng-xia, ZHENG Ying-guang*,NIU Ya-ming, WANG Gui-bin, JIANG Zhen-hua*
Chinese Journal of Magnetic Resonance . 2003, (4): 343 -348 .