INVESTIGATION THE STRUCTURE AND DIELECTRIC PROPERTIES OF PP+PbS NANOCOMPOSITES SYNTHESIZED ON THE BASIS OF POLYPROPYLENE POLYMER IRRADIATED BY ACCELERATED HEAVY IONS

Dielectric properties of PP+PbS nanocomposites synthesized on the basis of both pure and irradiated by accelerated heavy ions polypropylene films have been investigated. Experimentally has been found that there is an extreme in the dependence of dielectric permitivity versus irradiation time. Optimum conditions are created for formation of nanoparticles in the matrix and the Pbs nanoparticles are appeared in tracks up to definite value of irradiation time. Increase in irradiation time causes growth of destructive processes and it leads to collapse of a polymeric structure. In turn it yields sharply increase in electrical conductivity and as a result the dielectric permitivity decreases rapidly.