2018 (1) 4
Peculiarities of structural organization and antimicrobial activity of nanocomposites of pectin–Ag–polyethyleneimine, obtained by chemical and thermochemical reduction of silver ions
V.L. Demchenko, V.I. Shtompel’, L.A. Goncharenko
Institute of Macromolecular Chemistry, NAS of Ukraine
48, Kharkivske shose, Kyiv, 02160, Ukraine
Polym. J., 2018, 40, no. 1: 31-35
Section: Physics of polymers.
Language: Ukrainian.
Abstract:
Structural organization and antimicrobial properties of nanocomposites based on pectin, polyethyleneimine and Ag nanoparticles, which formed by the chemical and thermochemical reduction methods from polyelectrolyte–metal complexes pectin–Ag+–polyethyleneimine have been investigated. Such type of nanocomposites with Ag nanoparticles incorporated into polymer matrix is obtained due to the chemical reduction of Ag+ ions by NaBH4 in the polyelectrolyte complex. The appearance of the silver metallic phase is observed in full extent while BH4– : Ag+ molar ratio is equal to 2.0. It is defined that thermochemical reduction of Ag+ ions in polyelectrolyte–metal complexes bulk (while films are heated to the temperature around 100 °С and more) also results in formation of silver-containing nanocomposites. The antimicrobial investigation of the elaborated nanocomposites has been revealed. They possess a high antimicrobial activity against S. aureus and E. coli strains.
Key words: polyelectrolyte complexes; polyelectrolyte–metal complexes; silver-containing nanocomposite; structure; antimicrobial activity.
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