| 초록 |
Multi-walled carbon nanotubes (MWCNTs), which show antibacterial activity and good mechanical property, were used as filler of polyethersulfone (PES) ultrafiltration membranes. For well-dispersed MWCNTs in PES membranes, PES was sulfonated by chlorosulfuric acid before grafted on aminated MWCNTs at which sulfonamide bonds were formed. The formation of sulfonated PES grafted MWCNTs (SPES-g-MWCNTs) were confirmed by FT-IR, NMR, XPS, TGA and FE-SEM analyses. The hydrophilicity and water flux of the PES/SPES-g-MWCNTs membranes increased with increasing SPES-g-MWCNTs content. No antibacterial activity was observed for PES membranes, while PES/SPES-g-MWCNTs membranes displayed antibacterial activity. Membranes having antibacterial activity, high water flux, and improved fouling resistance without a loss in solute rejection could be fabricated by blending PES with SPES-g-MWCNTs |
