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- Title
Antibacterial Thin Film Composite Polyamide Membranes Prepared by Sequential Interfacial Polymerization.
- Authors
Zhai, Xiaofei; Ye, Jianlong; He, Yaoting; Ahmatjan, Zulpiyam; Zhang, Yufeng; Lin, Song; Wang, Chunhao; Hu, Xiaoyu; Meng, Jianqiang
- Abstract
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.
- Subjects
COMPOSITE membranes (Chemistry); POLYAMIDE membranes; THIN films; POLYAMIDES; POLYMERIZATION; ZETA potential; STAPHYLOCOCCUS aureus
- Publication
Macromolecular Materials & Engineering, 2020, Vol 305, Issue 7, p1
- ISSN
1438-7492
- Publication type
Article
- DOI
10.1002/mame.202000114