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Thin film composite polyamide reverse osmosis membranes with good chlorine tolerance

机译:具有良好耐氯性的薄膜复合聚酰胺反渗透膜

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A thin film composite (TFC) polyamide (PA) reverse osmosis (RO) membrane with good chlorine tolerance and good permeation properties was prepared by the conventional interfacial polymerization technique. Instead of using meta-phenylene diamine as amine monomer, 2,6-diaminotoluene (2,6-DAT) was used in this study for the formation of TFC PA RO membrane since the polyamide prepared from 2,6-DAT and trimesoyl chloride (TMC) showed good chlorine tolerance and proper hydrophilicy.bThe membrane prepared was characterized using different types of analytical tools such as field emission scanning electron microscopy (FE-SEM), contact angle analyzer, permeation test set-up, and high performance liquid chromatography (HPLC). The membrane showed good permeation properties for the desalination process, also it showed good chlorine tolerance, when tested by using a feed solution containing 2,000 ppm NaOCl for 20 hours.
机译:通过常规界面聚合技术制备了具有良好耐氯性和良好渗透性能的薄膜复合材料(TFC)聚酰胺(PA)反渗透(RO)膜。代替使用间苯二胺作为胺单体,本研究中使用了2,6-二氨基甲苯(2,6-DAT)来形成TFC PA RO膜,因为由2,6-DAT和均苯三甲酰氯制得的聚酰胺( TMC)表现出良好的耐氯性和适当的亲水性。b使用不同类型的分析工具对制备的膜进行表征,例如场发射扫描电子显微镜(FE-SEM),接触角分析仪,渗透测试装置和高效液相色谱仪( HPLC)。当通过使用含有2,000 ppm NaOCl的进料溶液进行20小时测试时,该膜在脱盐过程中显示出良好的渗透性能,并且还显示出良好的耐氯性。

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