High permeable PTMSP/PAN composite membranes for solvent nanofiltration

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Volkov, Alexey V. and Parashchuk, Victor V. and Stamatialis, Dimitrios F. and Khotimsky, Valery S. and Volkov, Vladimir V. and Wessling, Matthias (2009) High permeable PTMSP/PAN composite membranes for solvent nanofiltration. Journal of Membrane Science, 333 (1-2). pp. 88-93. ISSN 0376-7388

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Abstract:This paper describes the preparation of composite membranes comprising a poly[1-(trimethylsilyl)-1-propyne] (PTMSP) top-layer on a porous poly(acrylonitrile) (PAN) support. The PTMSP layer has different top-layer thickness in the range of 0.7–6.3 μm. The optimized PTMSP/PAN composite membranes with top-layer thickness of about 1 μm have ethanol permeability of 3.8 kg/(m2 h bar) and 90% retention of the negatively charged dye Remazol Brilliant Blue R (MW 626.5) at 5 bar. The permeability of methanol, ethanol or acetone through the PTMSP/PAN composite membranes is higher than a number of commercial available nanofiltration membranes, whereas all membranes have rejection of about 90% for negative charged dyes of different molecular weight. The permeability of methanol, ethanol and acetone through the PTMSP/PAN composite membranes depends on solvent viscosity and membrane swelling; the solvent viscosity seems to be the dominant factor.
Item Type:Article
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Science and Technology (TNW)
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Link to this item:http://purl.utwente.nl/publications/71530
Official URL:http://dx.doi.org/10.1016/j.memsci.2009.01.050
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