title: N-Halamine-modified antimicrobial polypropylene nonwoven fabrics for use against airborne bacteria.
abstract: Disinfecting, nonbleaching compound 1-chloro-2,2,5,5-tetramethyl-4-imidazolidinone (MC) was uniformly coated onto polypropylene melt-blown nonwoven fabrics having basis-weights of 22 and 50 g/m(2) in order to impart antimicrobial properties via a pad-dry technique. The antimicrobial efficacies of the tested fabrics loaded with MC compound were evaluated against bioaerosols of Staphylococcus aureus and Escherichia coli O157:H7 utilizing a colony counting method. It was determined that both types of coated fabrics exhibited superior antimicrobial efficacy upon exposure to aerosol generation for 3 h. The effect of the coating on air permeability was found to be minimal. Samples were stable for a 6 month time period when they were stored in darkness. However, when the fabrics were exposed to fluorescent light, partial chlorine loss was observed. The MC-coated fabrics exhibited great potential for use in protective face masks and air filters to combat airborne pathogens.
authors.affiliation: Department of Chemistry and Biochemistry, Auburn University , Auburn, Alabama 36849, United States.
authors.forename: Buket
authors.initials: B
authors.lastname: Demir
authors.forename: Idris
authors.initials: I
authors.lastname: Cerkez
authors.forename: S D
authors.initials: SD
authors.lastname: Worley
authors.forename: R M
authors.initials: RM
authors.lastname: Broughton
authors.forename: Tung-Shi
authors.initials: TS
authors.lastname: Huang
mesh_terms: D000391:Air Microbiology; D000900:Anti-Bacterial Agents / Q000737:chemistry / Q000494:pharmacology*; D001419:Bacteria / Q000187:drug effects*; D004202:Disinfectants / Q000737:chemistry / Q000494:pharmacology*; D004926:Escherichia coli / Q000187:drug effects; D011126:Polypropylenes / Q000737:chemistry / Q000494:pharmacology*; D013211:Staphylococcus aureus / Q000187:drug effects; D013784:Textiles / Q000032:analysis* / Q000382:microbiology
chemical_list: D000900:Anti-Bacterial Agents; D004202:Disinfectants; D011126:Polypropylenes
keywords: N-halamines; air filters; antimicrobials; bioaerosols; nonwovens; protective face masks