Demchenko V. Nanocomposites based on polyelectrolyte complexes of polysaccharides and nanoparticles of copper and silver

Object of research. Processes of synthesis and regularities of formation of copper and silver-containing nanocomposites by reduction of metal ions in triple polyelectrolyte-metal complexes based on polysaccharides. The aim of this work is to develop methods for the synthesis of polyelectrolyte complexes anionic polysaccharide-cationic polysaccharide and anionic polysaccharide-cationic synthetic polyelectrolyte, triple coordination complexes with Cu2+ and Ag+ ions and copper- and silver-containing compounds based on them. the relationship between the composition of the synthesized complexes and the method of reduction of metal ions with the structure, morphology and properties of the obtained nanocomposites. Methods were used for the study: infrared spectroscopy; wide- and small-angle X-ray scattering; transmission electron microscopy; pyrolytic mass spectrometry; differential scanning calorimetry, thermogravimetric and thermomechanical analysis; dielectric spectroscopy; testing of antimicrobial activity. The influence of temperature and during thermochemical reduction, the influence of the molar ratio [NaBH4]:[metal ion], duration and type of chemical reducing agent (NaBH4, N2H4, C6H8O6) during chemical reduction, as well as the influence of magnetic or electric field during chemical reduction on the structure and properties of the obtained nanocomposites. The developed methods of synthesis of copper and silver-containing nanocomposites can be the basis for creating fast and efficient technology for manufacturing nanocomposite materials with antimicrobial action, for designing and manufacturing photonic devices and microelectronics elements and for creating 3D printing technology with nanocomposite materials with effective antimicrobial action.