posted on 2009-12-08, 11:31authored byKevin Terry Cliff, Steve Tarleton
This paper details the characterisation (e.g. stiffness, swelling) of catalyst crosslinked
polydimthylsiloxane (PDMS) and its subsequent performance as the selective layer in
polyacylonitrile (PAN)/PDMS composite nanofiltration membranes. The latter is illustrated by way
of the representative filtration performance of 9,10-diphenylanthracene solute from n-heptane
solvent. It was found that altering the composition of the PDMS polymer has a relatively large
effect on the rigidity of the material but little effect on the extent of solvent induced swelling.
Additionally, when used as part of a membrane, increasing the catalyst amount has the dual effect
of increasing solute rejection and lowering solvent flux. In this way a modicum of tailoring can be
introduced to the membrane manufacture process to suit specific process needs.
History
School
Aeronautical, Automotive, Chemical and Materials Engineering
Department
Chemical Engineering
Citation
CLIFF, K.T. and TARLETON, E.S., 2009. Catalyst crosslinked membranes for use in solvent resistant nanofiltration. IN: Proceedings of Filtech 09, Wiesbaden, Germany, 13-15 October 2009, Vol 2, pp. 678-685