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      N-Halamine-modified antimicrobial polypropylene nonwoven fabrics for use against airborne bacteria.

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          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.

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          Author and article information

          Journal
          ACS Appl Mater Interfaces
          ACS applied materials & interfaces
          American Chemical Society (ACS)
          1944-8252
          1944-8244
          Jan 28 2015
          : 7
          : 3
          Affiliations
          [1 ] Department of Chemistry and Biochemistry, Auburn University , Auburn, Alabama 36849, United States.
          Article
          10.1021/am507329m
          25587845
          cc58242b-fe1e-464f-9197-375f9181c0fa
          History

          air filters,N-halamines,antimicrobials,bioaerosols,nonwovens,protective face masks

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