Effect of cationic polyelectrolyte on the structure and antimicrobial activity of silver-containing nanocomposites based on interpolyelectrolyte complexes with a pectin anionic component
| Autor: | M. O. Rokytskyi, O. M. Demchenko, S. M. Kobylinskyi, Maksym Iurzhenko, V.L. Demchenko, N.P. Rybalchenko |
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| Rok vydání: | 2021 |
| Předmět: |
chemistry.chemical_classification
Polyethylenimine Materials Science (miscellaneous) Cationic polymerization 02 engineering and technology Cell Biology Polymer 010402 general chemistry 021001 nanoscience & nanotechnology Ascorbic acid 01 natural sciences Atomic and Molecular Physics and Optics Polyelectrolyte Silver nanoparticle 0104 chemical sciences Chitosan chemistry.chemical_compound Adsorption chemistry Chemical engineering Electrical and Electronic Engineering Physical and Theoretical Chemistry 0210 nano-technology Biotechnology |
| Zdroj: | Applied Nanoscience. 12:459-466 |
| ISSN: | 2190-5517 2190-5509 |
| DOI: | 10.1007/s13204-021-01670-5 |
| Popis: | This paper investigates the structure, morphology and antimicrobial properties of silver-containing nanocomposites based on interpolyelectrolyte complexes (IPEC) of pectin with polyethylenimine, cationic starch or chitosan as a cationic polyelectrolyte. The reduction of silver ions was carried out by thermochemical technique by heating of the interpolyelectrolyte–metal complexes, which in turn prepared by adsorption of ions on IPEC. The chemical reduction was also performed using ascorbic acid as reductant. The temperature and time needed to produce the nanocomposites at which completely reduction of silver ions occurs are 150 °C and 30 min. It is revealed that during thermochemical reduction depending on the type of cationic polyelectrolyte (PEI, cationic starch, chitosan), silver nanoparticles with an average size of 4.1, 5.3 and 4.7 nm, respectively, are formed. Various mechanisms of thermochemical reduction for interpolyelectrolyte–metal complexes containing polymers with aminogroups or polymers with the glucopyranose units are considered. It is found that the silver-containing nanocomposites, formed by thermochemical reduction, exhibited higher antimicrobial activity against strains of S. aureus and E. coli than ones obtained using ascorbic acid. |
| Databáze: | OpenAIRE |
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