3-Bromopropyl-5,5-dimethylhydantoin was synthesized and grafted on the surface of Fe3O4@SiO2 modified with polyethyleneimine.The quaternarized halamine polymer-functioned Fe3O4@SiO2 nanoparticles were obtained after chlorination.The structure,morphology and characterization of samples were measured by FT-IR,TEM,zeta-potential measurement and VSM.It was super-paramagnetic and could be separated quickly by the aid of an external magnetic field.The results of antibacterial tests showed that the antibacterial mechanism of chlorinated samples was synergistic with quaternary ammonium salt and halamine and the antibacterial property was better than the one without chlorination.100% of S.aureus and E.coli were inactivated within 30min of contact.
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基金资助
国家自然科学基金(51603020);吉林省教育厅(JJKH20170555KJ)
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