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- Title
Antimicrobial efficacy and light stability of N-halamine siloxanes bound to cotton.
- Authors
Xuehong Ren; Lei Kou; Jie Liang; S. Worley; Ywh-Min Tzou; T. Huang
- Abstract
Abstract N-halamine silane syntheses and coatings of cotton fabrics as siloxanes were addressed for a series of silanes. The coated fabrics were chlorinated by exposure to dilute sodium hypochlorite with a range of chlorine loadings from 0.20% to 0.26%. Two types of N–Cl moieties were involved in the N-halamine siloxanes, amine and amide. The siloxane-coated cotton swatches were very effective in inactivating Escherichia coli O157:H7 and Staphylococcus aureus, each in 10 min contact time. The N–Cl bond and compound stabilities under UV irradiation and ambient light exposure were also investigated. Both UV and laboratory light stability tests show that most of the chlorine on cotton coated with 3-(3-triethoxysilylpropyl)-7,7,9,9-tetramethyl-1,3,8-triazaspiro[4.5]decane-2,4-dione could be regenerated after irradiation, while most of the lost chlorine from 5,5-dimethyl-3-(3′-triethoxysilylpropyl)hydantoin and 4-[3-triethoxysilylpropoxyl]-2,2,6,6-tetramethylpiperidine could not be recovered upon rechlorination.
- Subjects
TEXTILES; COTTON; SILANE compounds; STAPHYLOCOCCUS aureus infections; COATING processes; COTTON textiles; SURFACES (Technology); COATED textiles
- Publication
Cellulose, 2008, Vol 15, Issue 4, p593
- ISSN
0969-0239
- Publication type
Article
- DOI
10.1007/s10570-008-9205-9