Antibacterial activity of reactive quaternary ammonium compounds in solution and in nonleachable coatings
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2011Autor
Gozzelino, G.
Romero Tobar, D. E.
Chaitiemwong, N.
Hazeleger, W.
Beumer, R.
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Resumo
Antibacterial polymers suitable for coating applications without leaching of the biocidal component have been obtained by
UV copolymerization of acrylic resins with acrylic monomers containing quaternary ammonium moieties. Suitable reactive
biocides, based on quaternary ammonium monomers (QAMs), endowed with undecylacryloyl group and alkyl chains with 2
(QAM-C2), 8 (QAM-C8), and 16 (QAM-C16) carbon atoms have been synthesized. Aqueous solutions of QAMs showed
biocidal activity against Escherichia coli, Staphylococcus aureus, and Listeria monocytogenes strains both in suspension and
adhered to stainless steel surfaces. QAM-C16 and QAM-C8 evidenced higher activity toward bacteria in suspension and on
stainless steel, respectively. The QAMs have shown sufficient reactivity to be copolymerized, by UV irradiation, with a
commercial urethane acrylic resin for coating. Bioactivity tests, performed on free films of crosslinked coatings containing 1% of
copolymerized QAM, have shown an increasing inactivation effect in the order of magnitude L. monocytogenes , E. coli , S.
aureus with a maximum activity of the QAM-C8.
Palabras clave
Antibacterial activity; Reactive quaternary ammonium; Nonleachable coatingsLink para o recurso
https://doi.org/10.4315/0362-028X.JFP-11-220Collections
- Año 2011 [102]
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