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聚氯乙烯及改性膜对不同物质的抗污染性和膜清洗效果

作者：赵百添，陆茵＊，张盛杰

单位：宁波大学海洋学院，应用海洋生物技术教育部重点实验室，宁波 315211

关键词：聚氯乙烯；微滤；改性；抗污染性；膜阻力

DOI号：

分类号： TQ325.3

出版年,卷(期):页码： 2015,35(6):48-54

摘要：

采用原子转移自由基聚合（ATRP）法将烯丙基聚乙二醇（APEG）接枝到聚氯乙烯（PVC）分子链上对PVC进行接枝改性。通过非溶剂致相分离（NIPS）法将未改性PVC和改性PVC制备成微滤膜，研究成膜对牛血清蛋白、L-谷胱甘肽、聚乙二醇、海藻糖、丙三醇、三乙酸甘油酯、2-乙基丁酸和β-苯乙胺等具有不同特征基团物质的抗污染性，分别用水、酸、碱对受污染膜进行清洗，以膜阻力恢复率表征膜清洗效果。结果表明：与未改性PVC膜相比，改性PVC膜对不同物质的抗污染性表现出显著差异；水、酸、碱对不同污染物的清洗能力也各不相同，因此仅用一种污染物来表征膜的抗污染性是有局限性的。

Allyl polyethylene glycols（APEG）was grafted onto poly（vinyl chloride）（PVC）via atom transfer radical polymerization（ATRP）method. Nonsolvent induced phase separation（NIPS）was applied to prepare the unmodified and modified PVC microfiltration membrane. BSA, L-Glutathione, PEG-400, Trehalose Dihydrate, Glycerin, Glycerol Triacetate, 2-Ethylbutyric Acid and β-Phenethylamine were used to characterize the anti-pollution performance of PVC membrane. The polluted membrane was cleaned with water, acid or alkali, and the cleaning effect was determined by recovery rate of membrane resistance. The results show that the anti-pollution performance of modified PVC membrane to different substances has significant difference compared to unmodified membrane. The cleaning ability of water, acid or alkali to pollutants also exist difference. Therefore, through one kind of pollutant to characterize the pollution-resistant of membrane has limitation.

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参考文献：

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