High permeable PTMSP/PAN composite membranes for solvent nanofiltration

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
Faculty:	Science and Technology (TNW)
Research Group:	Membrane Science and Technology (MST)
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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