Anti-fouling and anti-bacterial polyethersulfone membranes quaternized from the additive of poly(2-dimethylamino ethyl methacrylate) grafted SiO2 nanoparticles

作者：Zhu, Li-Jing; Zhu, Li-Ping^*; Zhao, Yi-Fan; Zhu, Bao-Ku; Xu, You-Yi

来源：Journal of Materials Chemistry A, 2014, 2(37): 15566-15574.

DOI：10.1039/c4ta03199g

• COMPOSITE NANOFILTRATION MEMBRANES
• TRANSFER RADICAL POLYMERIZATION
• IN-SITU POLYMERIZATION
• HOLLOW-FIBER MEMBRANE
• ULTRAFILTRATION MEMBRANES
• PVDF MEMBRANE
• AMPHIPHILIC COPOLYMER
• POLYSULFONE MEMBRANES
• ANTIFOULING PROPERTY
• SURFACE MODIFICATION

Anti-fouling and anti-bacterial polyethersulfone (PES) membranes were developed by the addition of poly(2-dimethylaminoethyl methacrylate) grafted silica nanoparticles (SiO2-g-PDMAEMA NPs) and further post-quaternization. The SiO2-g-PDMAEMA NPs were first synthesized by grafting PDMAEMA brushes from SiO2 NPs via surface-initiated, reversible addition fragmentation chain transfer (RAFT) polymerization. PES/SiO2-g-PDMAEMA hybrid ultrafiltration (UF) membranes were then prepared from the blending solutions of PES and SiO2-g-PDMAEMA NPs via non-solvent induced phase separation (NIPS) process. The PDMAEMA chains incorporated into the PES membranes were further quaternized by reacting with 1,3-propane sultone (1,3-PS) and methyl iodide (CH3I), respectively. After treatment with 1,3-PS, the resulting zwitterionic PES membranes exhibited excellent hydrophilicity, water permeability, solute rejection and protein anti-fouling properties. The cationic membranes obtained from CH3I treatment showed strong anti-bacterial activity against Escherichia coli (E. coli) and Staphyloccocus aureus Rosenbach (S. aureus). This work presents a convenient strategy for anti-biofouling modification of polymer membranes via surface quaternization of the reactive SiO2-g-PDMAEMA NPs additive.

• 出版日期2014
• 单位浙江大学