title: New filtering antimicrobial nonwovens with various carriers for biocides as respiratory protective materials against bioaerosol.
abstract: This study evaluated the bioactivity of polypropylene melt-blown filtering nonwovens used in respiratory protective devices (RPD) with a biocidal agent (alkylammonium microbiocides) on 2 mineral carriers. Two types of carriers were tested: a bentonite, with an aluminosilicate base, and a perlite, volcanic glass. High biostatic and biocidal effects of modified nonwovens with biocides were tested against Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus) bacteria. Nonwovens modified with a biocide on a bentonite carrier showed an opposite reaction to a biocide on a perlite. The research also showed that 10% concentration of a biocidal agent on a perlite carrier was sufficient to inhibit the growth of bacteria (100% reduction) placed in the structure of a filtering material during normal use of RPD. A comparison of the biological activity of 2 filtering materials, each containing 10% of a perlite and produced in a laboratory and industrial conditions, showed no statistically significant differences.
authors.affiliation: Central Institute for Labour Protection - National Research Institute (CIOP-PIB), Łódź, Poland. kamaj@ciop.lodz.pl
authors.forename: Katarzyna
authors.initials: K
authors.lastname: Majchrzycka
authors.forename: Beata
authors.initials: B
authors.lastname: Gutarowska
authors.forename: Agnieszka
authors.initials: A
authors.lastname: Brochocka
authors.forename: Bogumił
authors.initials: B
authors.lastname: Brycki
mesh_terms: D000537:Aluminum Oxide; D001546:Bentonite; D004202:Disinfectants; D004926:Escherichia coli / Q000254:growth & development; D005374:Filtration / Q000295:instrumentation*; D019570:Inhalation Exposure / Q000517:prevention & control*; D012134:Respiratory Protective Devices / Q000382:microbiology*; D012822:Silicon Dioxide; D013211:Staphylococcus aureus / Q000254:growth & development
chemical_list: D004202:Disinfectants; C003076:Perlite; D001546:Bentonite; D012822:Silicon Dioxide; D000537:Aluminum Oxide