INFLUENCE OF PACKING OF THE POLYSTYRENE MICRODOMAIN IN BLOCK COPOLYMERS OF STYRENE WITH BUTADIENE ON THEIR ELECTROCONDUCTIVE PROPERTIES

Study of the structure and transport properties of block copolymers of styrene with butadiene points out the essential increase of the electron-hole conductivity in the PS-microdomain for the case of its two-layer structure especially when the PS homopolymer spheroids are localized near the sublamelar boundary. The less dense packing of star-like chains of the block copolymer comparing with the linear ones results in the lesser efficiency of the charge transfer. Features of the microstructure of the PS-microdomain are shown to affect the concentration of dimers - paired associates of phenyl rings. The dimer is assumed to play the role of the intermolecular bridge in the charge transfer resulting in the percolation dependence of the radiation-induced electrical conductivity on the content of dimers.