Bactericidal polymeric composites based on poly(vinyl butyral) and silver ions containing organically modified SiO2

1Tolstov, AL, 2Malanchuk, ON, 3Klymchuk, DA, 1Matyushov, VF, 1Lebedev, EV
1Institute of Macromolecular Chemistry of the NAS of Ukraine, Kyiv
2Institute of Molecular Biology and Genetics of the NAS of Ukraine, Kyiv
3M. G. Kholodny Institute of Botany of the NAS of Ukraine, Kyiv
Dopov. Nac. akad. nauk Ukr. 2016, 1:74-80
Section: Chemistry
Language: Russian

Bactericidal polymeric composite materials are prepared by sol-gel synthesis of organically modified SiO2 in the presence of poly(vinyl butyral) followed by theintroduction of silver ions. FTIR and UV-vis spectral studies have shown a complexation of Ag+ ions by aminopropyl fragments of the inorganic constituent. The composite is characterized by a uniform distribution of SiO2 particles with an averaged size of 258 ± 46 nm in the polymer matrix and the reduced hydrophilicity compared to the neat polymer. Polymeric composites demonstrate the stable bactericidal activity at the silver content in the range of 0.03–0.6%.

Keywords: bactericidal properties, poly(vinyl butyral), silica, silver, sol-gel synthesis
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