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Zwitterion Co-Polymer PEI-SBMA Nanofiltration Membrane Modified by Fast Second Interfacial Polymerization
Yu-Hsuan Chiao1,2,3, Tanmoy Patra4, Micah Belle Marie Yap Ang3
1Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei 10607, Taiwan.
Polymers
|February 5, 2020
Summary
This study developed advanced thin film composite nanofiltration membranes using a novel second interfacial polymerization method. These membranes show enhanced antifouling and antibacterial properties for effective wastewater treatment and clean water production.
Area of Science:
- Materials Science
- Environmental Engineering
- Chemical Engineering
Background:
- Nanofiltration membranes are crucial for addressing water scarcity and wastewater treatment due to low energy consumption.
- Thin film composite membranes require high permeability and robust antifouling/antibacterial properties for efficient water purification.
Purpose of the Study:
- To fabricate and characterize novel thin film composite nanofiltration membranes.
- To investigate the impact of second interfacial polymerization on membrane performance, antifouling, and antibacterial capabilities.
Main Methods:
- Fabrication of membranes using polyacrylonitrile support and polyethylene amine/zwitterionic sulfobutane methacrylate.
- Characterization via ATR-FTIR, XPS, FESEM, and AFM.
- Evaluation of antifouling (BSA, lysozyme) and antibacterial (E. Coli) properties.
Main Results:
- Successful incorporation of polyamide layer and 'ion pair' characteristics via second interfacial polymerization.
- Demonstrated improvements in water contact angle and surface charge.
- Significantly enhanced antifouling and antibacterial performance against model foulants.
Conclusions:
- Second interfacial polymerization is an effective modification strategy for thin film composite nanofiltration membranes.
- The developed membranes exhibit promising properties for large-scale wastewater treatment and clean water production.
- The modification enhances membrane durability and functionality without compromising selectivity.
