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Palsamy Kanagaraj,Alagumalai Nagendran,Sivasubramaniyan Neelakandan 한국화학공학회 2014 Korean Journal of Chemical Engineering Vol.31 No.6
A charged surface modifying macromolecule (cSMM) was synthesized, characterized by FT-IR spectroscopyand blended into the casting solution of cellulose acetate (CA) to prepare surface modified UF membranesby phase inversion technique. With an increasing cSMM additive content from 1 to 4 wt%, pure water flux (PWF)and water content (WC) were increases whereas the hydraulic resistance decreases. Surface characteristic study revealsthat the surface hydrophilicity increased in cSMM modified CA membranes. The pore size and surface porosity ofthe 4 wt% cSMM blend CA membranes increases to 41.26 Å and 0.015%, respectively. Similarly, the molecular weightcut-off (MWCO) of the membranes ranged from 20 to 45 kDa, depending on the various compositions of the preparedmembranes. Lower flux decline rate (47.2%) and higher flux recovery ratio (FRR) (89.0%), exhibited by 4 wt% cSMMblend membranes demonstrated its fouling resistant characteristic compared to pristine CA membrane.