ELECTROPHYSICAL PROPERTIES OF THE IODINE- DOPED ETHYLENE-ACETYLENE COPOLYMERS

The advantages of new soluble, fusible, processible, and oxidation-res istant copolymers based on ethylene and acetylene; in which the conten t of rigid (acetylene) and flexible (ethylene) fragments was varied ov er a wide range, were studied. The structure of the nascent powders an d films was investigated by means of scanning electron microscopy, X-r ay diffraction, and DSC methods. Doping with iodine was shown to resul t in the appearance of de conductance in copolymer samples in which th e content of acetylene fragments was higher than 10 mol %. The transpo rt of charge carriers in the copolymers was found to be controlled by the doped acetylene fragments and was described by the hopping mechani sm.