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Antibacterial Thin Film Composite Polyamide Membranes Prepared by Sequential Interfacial Polymerization
Macromolecular Materials and Engineering ( IF 3.9 ) Pub Date : 2020-06-18 , DOI: 10.1002/mame.202000114
Xiaofei Zhai 1 , Jianlong Ye 1 , Yaoting He 1 , Zulpiyam Ahmatjan 1 , Yufeng Zhang 1 , Song Lin 2 , Chunhao Wang 3 , Xiaoyu Hu 3 , Jianqiang Meng 1
Affiliation  

In this work, thin film composite polyamide (PA) membranes are modified by polyethyleneimine (PEI) and 2,6‐diaminopyridine (DAP) through sequential interfacial polymerization to fabricate contact active antibacterial membranes. The modified membranes show improved hydrophilicity and enhancement of zeta potential. Upon tethering with PEI and DAP onto the PA membranes, the membrane flux increases from 35.7 to 46.7 and 50.0 L m−2 h−1, respectively. Further the salt rejection rate improves from 96.6% to 98.0% and 98.8%, respectively. The PA‐PEI membranes have a better antibacterial performance than PA‐DAP, with a bacteria killing ratio for both Escherichia coli (E. coli ) and Staphylococcus aureus (S. aureus ) over 96.7%, while a commercial LC LE‐4040 membrane presents bacteria killing ratio of 13.3% for E. coli and 8.4% for S. aureus , respectively.

中文翻译:

顺序界面聚合制备抗菌薄膜复合聚酰胺膜

在这项工作中,聚乙烯基亚胺(PEI)和2,6-二氨基吡啶(DAP)通过顺序界面聚合对薄膜复合聚酰胺(PA)膜进行了改性,以制造接触活性抗菌膜。改性膜显示出改善的亲水性和ζ电势的增强。在将PEI和DAP束缚到PA膜上时,膜通量分别从35.7增加到46.7和50.0 L m -2 h -1。此外,脱盐率分别从96.6%提高到98.0%和98.8%。PA‐PEI膜的抗菌性能优于PA‐DAP,对大肠杆菌E. coli)和金黄色葡萄球菌超过96.7%的金黄色葡萄球菌),而商用LC LE-4040膜对大肠杆菌金黄色葡萄球菌的杀灭率分别为13.3%和8.4%。
更新日期:2020-07-16
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