Azerbaijan National Academy of Science

1.Micro- and nanocomposite materials based on polymers (PE, PP, PVDF, PTFE, PET, PVC, PVA and epoxy resin, etc.) and fillers (TiO2, ZnO, Fe2O3, Al2O3, nano-Al2O3, nano-SiO2, nano -ZrO2, CdS/ZnS-binary combination, piezo filler, etc.), the mechanism of physicochemical processes occurring under the action of ionizing radiation in their supramolecular structure, electrophysical and active properties has been studied. The possibility of using polymer composites as an electroactive element in various energy-consuming elements of microelectronics and gas sensors has been studied, and satisfactory results have been obtained.

2.Nanocomposites based on nanosized magnetite (nano-α-Fe3O4) synthesized in the laboratory with various polymers (LDPE, PVDF, epoxy resin and urethane-alkyd varnish) were obtained and the possibilities of their application as radioprotective and radioabsorbing materials in the microwave region of electromagnetic waves were studied. The preliminary results of the influence of both the filler and γ- radiation and a constant magnetic field on their electrophysical properties (ε, tgδ and ρν) are analyzed. It has been established that layered composite structures formed on the basis of various composites exhibit more effective radio absorbing properties in the microwave range compared to pure composites.

3.Nanocomposites are obtained by forming nanoparticles (CdS, CuS, ZnS, etc.) by chemical sorption in the pores of PE, PTFE, PET polymer films formed by the orientation drawing method and PVA swollen in water. The electrophysical, luminescent, optical and electret properties of these composites were studied, and the mechanisms of the influence of structural changes caused by gamma radiation on their other properties were studied.

4.The nanostructure and supramolecular structure of YSPE/SiO2 and YSPE/ZrO2 polymer nanocomposites modified with gamma rays have been studied by small-angle neutron (SANS) and X-ray (SAXS) scattering methods. It has been established that in YSPE/ZrO2 nanocomposites, at the polymer-nanofiller interface, an interfacial zone with a thickness of ~10 ± 1 nm of low density is formed in comparison with the matrix. And in YSPE/SiO2 nanocomposites, an interfacial layer with a thickness of ~3 ± 1 nm, close to the density of the composite, is formed at the polymer-nanofiller interface. In the region of the modifying dose of gamma radiation (100–300 kGy), an increase in the performance properties of both nanocomposites was observed, and this increase turned out to be higher for the YSPE/SiO2 nanocomposites.