Antimicrobial treatment of nylon

Abstract

ABSTRACT:The preparation of an antimicrobial nylon material and its properties are discussed. Biocidal cyclic N-chloramine moieties were covalently bonded to Nylon 66. These moieties, which included hydantoins, oxazolidinones, and imidazolidinones, were stable during at least 3 months of dry storage, and their antimicrobial activities, once lost by reaction with reducing sodium thiosulfate, could be regenerated by exposure to free chlorine. Biocidal swatch tests showed that the nylon fabrics containing N-chlorinated hydantoin functional groups provided a 7.2 log reduction of Staphylococcus aureus and a 7.1 log reduction of Escherichia coli at a contact time of only 10 min. Antimicrobial nylon should find a variety of important uses such as in clothing, carpets, sutures, brushes, and so forth.

Antimicrobial Agents and Applications on Polymeric Materials

“…After attaching a hydroxymethyl functional group on Nylon 66, N-halamine precursors were imparted. The chlorinated fabrics showed 7 log reductions against Gram-positive and Gram-negative bacteria in 30 min contact-time 89) . A wet-spinning method was used to prepare N-halamine antimicrobial fibers.…”

Recent Developments in Finishing of Synthetic Fibers for Medical Applications

“…The treated materials were bactericidal against S. aureus and E. coli. Antibacterial nylon should find a variety of important uses such as in clothing, carpets, sutures, brushes and so forth [62]. Scheme 8.…”

Antibacterial Modification of Microcrystalline Cellulose by Grafting Copolymerization

“…After organisms are inactivated, the oxidizing nitrogen-halogen groups are reduced to nitrogen-hydrogen groups that can be rehalogenated by sodium hypochlorite; the materials modified by N-halamine compounds have long-term antibacterial properties (Sun amd Sun 2001;Zhu et al 2012). Given their ideal antibacterial activity, N-halamine compounds are widely used in surfaces such as fabrics (Lin et al 2001;Liu and Sun 2006;Ren et al 2009a), silica gel (Liang et al 2006;Barnes et al 2007;Cerkez et al 2012), and paints (Cao and Sun 2009;Kocer et al 2011a).…”