Abstract
AbstractMicrobial contamination of water and air requires novel filtration materials. Here, the disinfecting, nonbleaching compounds 1,3‐dichloro‐5,5‐dimethylhydantoin (DCDMH) and 1‐bromo‐3‐chloro‐5,5‐dimethyl hydantoin (BCDMH) were combined with PAN polymers via electrospinning for antimicrobial filtration. The resulting nanofibrous membranes (PAN/DCDMH and PAN/BCDMH) were fully characterized by SEM, EDS, FTIR, TG, and XPS. Antimicrobial activities of the tested membranes were challenged with E.coli O157:H7 and S.aureus in the aqueous and bioaerosols phase, using the colony counting method. Both types of embedded membranes showed excellent antimicrobial properties upon exposure to bacteria solution and aerosol, and all bacteria were quickly inactivated. The anti‐biofilm activity of embedded membranes was excellent after being treated with bacteria solution for 48 h. In addition, N‐chloramine displayed lower halogen loss than N‐bromamines in air and aqueous conditions. Both DCDMH and BCDMH embedded nanofibrous membranes showed great potential as filtration materials to remove microorganisms from aqueous and air conditions.
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