Abstract In this study, a simple approach to prepare quaternizated poly(vinyl chloride) (QPVC) ultrafiltration (UF) membrane was developed through soaking commercial PVC hollow fiber UF membrane in trimethylamine (TMA) solution. Infrared spectrum, 1H nuclear magnetic spectrum and Thermogravimetric analysis showed that quaternary ammonium group was successfully grafted on the PVC membrane, X-ray photoelectron spectroscopy and zeta potential testing results pointed out that the amount of grafted quaternary ammonium group varied with reaction conditions. By the modification, the membranes changed gradually from negatively charged to positively charged, the hydrophilicity of PVC membrane was enhanced and the membrane pore shrinked, which resulted in the improvement of permeability and rejection simultaneously. Moreover, antibacterial research testified the PVC membrane was endowed antibacterial properties after modified of quaternization.

中文翻译：

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通过原位季铵化同时提高PVC超滤膜的渗透性、选择性和抗菌性能

摘要 在本研究中，通过将商用 PVC 中空纤维超滤膜浸泡在三甲胺 (TMA) 溶液中，开发了一种制备季铵化聚氯乙烯 (QPVC) 超滤 (UF) 膜的简单方法。红外光谱、1H核磁谱和热重分析表明季铵基团成功接枝在PVC膜上，X射线光电子能谱和zeta电位测试结果表明接枝季铵基团的量随反应条件而变化。通过改性，膜由带负电逐渐变为带正电，PVC膜的亲水性增强，膜孔缩小，通透性和截留率同时提高。而且，