ABSTRACT:Crosslinked chloromethylated polystyrene beads were reacted with hydantoin and imidazolidinone derivatives to produce functionalized beads which could be rendered biocidal upon reaction with free chlorine or bromine. The biocidal efficacies of the N-chlorinated, and in one case, the N-brominated polymeric beads against Staphylococcus aureus and Escherichia coli O157:H7 in aqueous suspension have been determined. Synthetic methods and test data have been presented

A comparison has been made between the biocidal efficacies of N-chlorinated polymeric beads and two derivatives of polyquat beads. Biocidal effects were measured after brief contact exposures of aqueous suspensions of either Staphylococcus aureus or Escherichia coli to the waterinsoluble beads. The polymeric backbone was held the same in all three types of beads, so they differed only in their biocidal derivative moieties. In all cases, functionalization of crosslinked chloromethylated polystyrene beads was performed to introduce the biocidal properties. Synthetic methods and test data will be presented. The most effective biocide, as measured by degree of inactivation in the shortest contact time of the two species of bacteria, was the N-chlorinated hydantoinyl derivative of methylated polystyrene.

No abstract

A TPU elastomer was modified with N-halamine polymers as a novel food contact surface material with rechargeable antimicrobial activity.