Příprava organojílů s antibakteriálními vlastnostmi

Abstract

A three series of monoionic montmorillonites and vermiculites loaded with Ag+, Zn2+ a Cu2+ cations were successfully prepared by cation exchange reactions. Organoclays with antibacterial activity were prepared by intercalation of chlorhexidine diacetate to above mentioned monoionic clays. The resultant samples were characterized by X – ray diffraction (XRD) and infrared spectroscopy (IR). The antibacterial activity of prepared organoclays against Enterococus faecalis, Escherichia coli and Pseudomonas aeruginosa were evaluated by finding minimum inhibitory concentration (MIC). It was found that the prepared organovermiculites have better ability to inhibit bacterial growth and therefore they are more effecient than organomontmorillonites.