Susanto, Heru and Balakrishnan, Malini and Ulbricht, Mathias (2006) Via surface functionalization by photograft copolymerization to low-fouling polyethersulfone-based ultrafiltration membranes. Journal of Membrane Science, 288 . pp. 157-167. ISSN 0376-7388
|PDF (Low-fouling ultraﬁltration membranes have been prepared by simultaneous photograft copolymerization of poly(ethylene glycol) methacrylate (PEGMA) onto a polyethersulfone (PES) membrane with a nominal cut-off of 50 kg/mol. A comprehensive characterizatio) - Published Version
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Low-fouling ultraï¬ltration membranes have been prepared by simultaneous photograft copolymerization of poly(ethylene glycol) methacrylate (PEGMA) onto a polyethersulfone (PES) membrane with a nominal cut-off of 50 kg/mol. A comprehensive characterization was performed by ï¬ux measurement and sieving curve analysis, FTIR-ATR spectroscopy, contact angle and zeta potential measurement. The effects of UV irradiation and monomer concentration on membrane characteristics as well as membrane performance were also described. Model solutions of sugarcane juice polysaccharides and the protein BSA were used to examine the membrane performance. The results showed that UV irradiation time was the most important parameter with monomer concentration as another parameter to adjust the degree of functionalization. All modiï¬ed membranes showed more resistance to fouling and higher rejection than unmodiï¬ed membrane for both model solutions. A reduction of permeability due to pore constric-tion or even blocking by grafted polyPEGMA was also observed. Surface functionalization of PES UF membranes using relatively high monomer concentration (40 g/L) at medium irradiation times (1.5â3 min) was recommended as the best condition with respect to ï¬ux, rejection and fouling.This study provides valuable information for the development of low-fouling ultraï¬ltration membranes especially for sugarcane juice clariï¬cation. Â© 2006 Elsevier B.V. All rights reserved.
|T Technology > TP Chemical technology
|Faculty of Engineering > Department of Chemical Engineering
Faculty of Engineering > Department of Chemical Engineering
|11 Oct 2012 11:27
|12 Oct 2012 14:51
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