Article

Biocidal polyester

Department of Chemistry & Biochemistry, Auburn University, AUO, Alabama, United States
Journal of Applied Polymer Science (Impact Factor: 1.64). 07/2002; 85(1):177 - 182. DOI: 10.1002/app.10588

ABSTRACT Polyester fabrics were modified by covalently linking heterocyclic moieties, which could be halogenated, to the surfaces of the polyester fibers. Antimicrobial activity was introduced into the fabrics and fibers by exposure to a source of oxidative chlorine (chlorine bleach) that converted the heterocyclic precursor moieties into N-chloramine functionalities. The antimicrobial activity could be repeatedly regenerated following its loss on challenge with suspensions of bacteria by further washing with aqueous oxidative chlorine. Biocidal polyester fabrics, fibers, and other materials potentially will be effective in reducing, or eliminating entirely, pathogenic microorganisms and odor-causing micro-organisms which directly contact them. © 2002 Wiley Periodicals, Inc. J Appl Polym Sci 85: 177–182, 2002

Download full-text

Full-text

Available from: Jang H. Kim, Jul 07, 2015
0 Followers
 · 
224 Views
  • [Show abstract] [Hide abstract]
    ABSTRACT: The biocidal polymers poly[1,3-dichloro-5-methyl-5-(4‘-vinylphenyl)hydantoin] and poly[1,3-dibromo-5-methyl-5-(4‘-vinylphenyl)hydantoin] and the monochlorinated derivative have been prepared as insoluble porous beads. Halogen stability, rechargeability, and efficacy against pathogens (Staphylococcus aureus, Escherichia coli O157:H7, MS2 virus, and poliovirus) in a water filtration application have been evaluated. While the polymers previously prepared in powdered granular solid form were effective against a wide variety of pathogens in contact times of a few seconds, the flow rates of water through cartridge filters containing them were often diminished because of clogging problems. Furthermore, the fine particles could be partially aerosolized in a manufacturing facility, thus causing a potential hazard for workers in the facility. The porous beads, prepared entirely by heterogeneous reactions, overcome these limitations while maintaining outstanding biocidal efficacies. The chlorinated beads have the potential to be used for disinfecting potable water in remote areas. The brominated beads are being evaluated as biocides for use in recirculating water applications such as for spas.
    Industrial & Engineering Chemistry Research 12/2002; 42(2). DOI:10.1021/ie020266+ · 2.24 Impact Factor
  • [Show abstract] [Hide abstract]
    ABSTRACT: It has been demonstrated that the biocidal polymers poly-1,3-dichloro-5-methyl-5-(4‘-vinylphenyl)hydantoin and the alkali metal salt and protonated forms of its monochlorinated derivative can be prepared as insoluble porous beads by careful control of the pH in the chlorination step. While the dichloro derivative will be primarily useful in flowing water disinfection applications, particularly for potable water and recreational water, the monochloro compounds will find use in applications in which disinfection contact time is of lesser importance, such as for recirculating water treatment and odor control. Biocidal efficacy and chlorine stability data have been presented, and the potential use patterns of the several derivatives have been discussed.
    Industrial & Engineering Chemistry Research 10/2003; 42(23). DOI:10.1021/ie0303303 · 2.24 Impact Factor
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: A novel N-halamine monomer has been prepared which can be copolymerised with a commercial water-borne acrylic polyol and a commercial isocyanate to produce a polyurethane coating which can be applied to a broad variety of surfaces. After curing, the coating can be chlorinated with a source of free chlorine, such as bleach, to render it biocidal. Once the coating loses its chlorine loading, and hence its biocidal activity, regeneration is possible by further exposure to free chlorine. In one experimental observation a coating on a wall retained its biocidal activity for more than six months. The biocidal coating should have many applications, for example, in medical facilities, in food preparation areas, in the prevention of biofouling in aqueous and humid environments, etc. Un nouveau monomère à la n-halamine a été préparé qui peut être copolymérisé avec un polyol acrylique hydrodiluable commercial et un isocyanate commercial afin de produire un revêtement polyuréthanique qui peut être appliqué à une large variété de surfaces. Après séchage le revêtement peut être chloré en utilisant une source de chlore libre, telle que l’eau de Javel, pour le rendre biocide. Une fois que le revêtement perd sa charge de chlore, et donc son activité biocide, la régénération est possible par le moyen d’une autre exposition au chlore libre. Au cours d’une certaine observation d’expérience on a noté que le revêtement d’un mur a retenu son activité biocide pendant plus de six mois. Le revêtement biocide devrait avoir de nombreuses applications, par example, dans les établissements médicaux, dans les lieux de préparation des produits alimentaires, dans le domaine de la prévention de la biocontamination des environnements humides ou aqueux, etc. Wir haben einen neuartigen N-Balaminmonomer hergestellt, der durch ein handelsübliches acrylisches Polyol und ein Isocyanat copolymerisiert werden kann. Der so erhaltene Lack kann auf eine weite Reihe von Oberflächen aufgetragen werden. Nach dem Härteprozess kann der Lack mit einem Produzenten von freiem Chlor wie Bleiche chloriniert werden, um die Biozidwirkung zu aktivieren. Da der Lack mit der Zeit seinen Chlorgehalt verliert und damit seine Wirkungskraft, kann diese Behandlung kann nach Bedarf wiederholt werden. Eines unserer Experimente zeigte dass der Lack seine Biozidwirkung für über sechs Monate beibehalten kann. Dieser Biozidlack dürfte vielfältig Anwendung finden, z. B. in Krankenhäusern, Küchen, zum Verhindern von Pilzbefall in feuchten Räumen und so weiter.
    Surface Coatings International Part B Coatings Transactions 12/2003; 86(4):273-277. DOI:10.1007/BF02699499