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Information × Registration Number 0218U007978, 0117U006171 , R & D reports Title The formation of nanocomposites based on polyelectrolyte complexes and Ag and Cu nanoparticles with effective antimicrobial activity popup.stage_title Head Demchenko Valeriy Leonidovich, Registration Date 28-12-2018 Organization Institute of macromolecular chemistry National Academy of Sciences of Ukraine popup.description2 Formed nanocomposites containing Cu and Ag nanoparticles by chemical and thermochemical reduction of metal ions in polyelectrolyte-metallic complexes (PMC). The features of the structure, thermomechanical and antimicrobial properties of the obtained polymer systems are investigated. It is shown that the thermochemical reduction of Ag+ ions in polyelectrolyte-metallic complexes (the films are heated to a temperature of 100 °C and above) also leads to the formation of silver-containing nanocomposites. It was shown that during the chemical reduction of Cu2+ ions nanocomposites of the Cu/Cu2O core-shell type are formed, while the structural of the Cu metal phase is fully realized at a molar ratio of BH4-: Cu2+ = 6 and a reduction time of 2 hours. It was found that during thermochemical reduction of Cu2+ ions the optimum parameters are temperature 170 °С and time 30 minutes. It has been established that nanocomposite polymer films with nanoparticles of silver obtained by thermochemical method exhibit better antimicrobial activity than those obtained by chemical reduction methods in relation to model gram-positive (S. aureus) and gram-negative (E. coli) microorganisms. Product Description popup.authors Демченко В.Л. Орел Л.А. popup.nrat_date 2020-04-02 Close