- Conference date: 18–21 November 2008
- Location: Shah Alam, Selandor (Malaysia)
Silver‐loading asymmetric polyethersulfone (PES) asymmetric membrane was prepared via the simple phase inversion technique. The homogeneous solution was prepared by dissolving and PES in N‐Methyl‐2‐pyrrolidone (NMP) or N,N‐dimethylformamide (DMF). The morphology of the resultant membrane was examined using a scanning electron microscope and the silver content in the membrane was measured using an Energy Dispersive Spectroscopy (EDS). Result shows that resultant membranes made of NMP solvent exhibit a finger‐like structure while membranes prepared with DMF exhibit a mixture of finger‐like and spongy structure with voids. The antibacterial activity of resultant membrane with the variation of silver content was measured using inhibition zone method. The results indicated that the PES‐silver membranes made up with NMP solvent were antibacterial to both Gram‐positive bacteria and Gram‐negative bacteria. Resultant membranes with DMF exhibit the highest pure water permeation (PWP) without any antibacterial activities.
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