Enhancement of antifouling and hydrodynamic permeability properties of polyethersulfone membranes using polydopamine as an additive
Volume Title: 1
1Department of Chemical Engineering, Amirkabir University of Technology, Tehran, Iran
2424 Hafez Ave, Tehran, Iran.Amirkabir University
In this work, the polyethersulfone/polydopamine (PES/PDA) blend membrane via non-solvent induced phase separation (NIPS) technique was produced to improve the hydrodynamic permeability, surface hydrophilicity, and antifouling properties of polyethersulfone membranes. At first, PDA was prepared based on the oxidant-induced dopamine polymerization in a solvent medium. Subsequently, the synthesized PDA was used as an additive to fabricate PES/PDA blend membrane. The characteristic of the unmodified and modified PES membranes was investigated, and the results showed that the PES/PDA membrane has low irreversible fouling and high flux recovery compared with that of the unmodified PES membrane. The pure water flux and antifouling properties of the PES membranes are both enhanced after blending modification as evaluated by oil/water filtration experiments. Moreover, the PES/PDA blend membrane has satisfying long-term stability in an aqueous environment.