期刊
JOURNAL OF MEMBRANE SCIENCE
卷 278, 期 1-2, 页码 199-204出版社
ELSEVIER
DOI: 10.1016/j.memsci.2005.10.056
关键词
fillers; zeolites; PDMS; swelling; solvent-resistant nanotiltration
The separation of solutions containing non-polar solvents, like toluene, was found to be limited for PDMS membranes, which is due to the extensive swelling of PDMS in those solvents. To improve the performance of silicone-based membranes for separations in non-polar solvents, extra cross-linking was introduced via the introduction of fillers. Of all fillers tested, zeolites were most efficient in decreasing the swelling of the PDMS network. Zeolites induce an increased cross-linking density, which is explained by the interactions between the silanol-groups of the filler and the PDMS-chains. The performance in SRNF of filled and unfilled PDMS membranes were compared, demonstrating increased solute rejection in non-polar solvents and at higher temperatures upon filler addition. (c) 2005 Elsevier B.V. All rights reserved.
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