Polysiloxane cationic biocides with imidazolium salt (ImS) groups, synthesis and antibacterial properties |
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Authors: | U Mizerska J Chojnowski R Ha?asa W Werel |
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Institution: | a Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Engineering of Polymer Materials, 112 Sienkiewicza, 90-363 Lodz, Poland b Department of Pharmacy of the Gdansk Academy of Medicine, 107 Hallera, 80-416 Gdansk, Poland |
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Abstract: | Novel polysiloxanes with pendant biocidal N,N′-dialkylimidazolium salt (ImS) groups were synthesized and compared with polysiloxanes bearing conventional biocidal quaternary ammonium salt (QAS) groups. The bacteriostatic power of these polymers was tested and compared under the same conditions in aqueous solution against two common strains of Gram positive bacteria and three strains of Gram negative bacteria. These new ImS containing polymers exhibited high antibacterial potency against all bacteria studied, similar to those substituted with QAS groups. The advantage of the imidazolium substituted polysiloxane stems from its higher thermal stability, as compared with the quaternary alkylammonium functionalized polymer, as demonstrated by thermogravimetric studies. |
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Keywords: | Functional polysiloxanes Antimicrobial polymers Polymer biocides Imidazolium salts Antibacterial activity Cationic biocides |
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