Biocidal poly(styrenehydantoin) beads for disinfection of water
Biocidal poly(styrenehydantoin) beads for disinfection of water
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DOI：
10.1021/ie020266
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发表时间：
2003-01-22
影响因子：
4.2
通讯作者：
Sun, G
中科院分区：
文献类型：
--
作者：
Chen, YJ;Worley, SD;Sun, G
生物杀灭聚合物聚[1，3-dichloro-5-methyl-5-(4‘-vinylphenyl)hydantoin]]和poly[1，3dibromo-5-methyl-5-(4’-vinylphenyl)hydantoin]及其一氯代衍生物已被制备成不溶于水的多孔球。对水过滤应用中的卤素稳定性、可充性和对病原体(金黄色葡萄球菌、O157：H7大肠杆菌、MS2病毒和脊髓灰质炎病毒)的有效性进行了评估。虽然以前制备的粉状颗粒状固体聚合物在几秒钟的接触时间内就能有效地对抗各种病原体，但由于堵塞问题，水通过装有它们的滤筒过滤器的流速往往会降低。此外，细颗粒可能在制造设施中被部分雾化，从而对设施中的工人造成潜在危险。完全由多相反应制备的多孔珠克服了这些限制，同时保持了出色的生物杀灭效果。氯化微珠有可能用于偏远地区的饮用水消毒。溴化微珠正在被评估为用于循环水应用的杀生剂，例如用于温泉。
The biocidal polymers poly[ 1,3-dichloro-5-methyl-5-(4'-vinylphenyl)hydantoin] and poly[1,3dibromo-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.