Flux stabilization of silicon nitride microsieves by backpulsing and surface modification with PEG moieties

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Gironès, M. and Bolhuis-Versteeg, L.A.M. and Lammertink, R.G.H. and Wessling, M. (2006) Flux stabilization of silicon nitride microsieves by backpulsing and surface modification with PEG moieties. Journal of Colloid and Interface Science, 299 (2). pp. 831-840. ISSN 0021-9797

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Abstract:The influence of the surface properties of chemically modified silicon nitride microsieves on the filtration of protein solutions and defatted milk is described in this research. Prior to membrane filtrations, an antifouling polymer based on poly(ethylene glycol), poly(TMSMA-r-PEGMA) was synthesized and applied on silicon-based surfaces like silicon, silicon nitride, and glass. The ability of such coating to repel proteins like bovine serum albumin (BSA) was confirmed by ellipsometry and confocal fluorescence microscopy. In BSA and skimmed milk filtrations no differences could be seen between unmodified and PEG-coated membranes (decreasing permeability in time). On the other hand, reduced fouling was observed with PEG-modified microsieves in combination with backpulsing and air sparging.
Item Type:Article
Copyright:© 2006 Elsevier
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Science and Technology (TNW)
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Link to this item:http://purl.utwente.nl/publications/57960
Official URL:http://dx.doi.org/10.1016/j.jcis.2006.03.006
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Metis ID: 235389