Development of a PDMS-grafted alumina membrane and its evaluation as solvent resistant nanofiltration membrane

Ana F.M. Pinheiro de Melo, Danny Hoogendoorn, Arian Nijmeijer, Louis Winnubst (Corresponding Author)

Research output: Contribution to journalArticleAcademicpeer-review

34 Citations (Scopus)

Abstract

A new solvent resistant nanofiltration (SRNF) membrane is developed by grafting a PDMS polymer into the pores of a 5 nm γ-alumina ceramic membrane. These PDMS-grafted γ-alumina membranes were attained through a two-step synthesis. The linking agent, 3-aminopropyltriethoxysilane (APTES), was first applied on a ceramic membrane either by a vapor phase or a solution phase method, followed by grafting of an epoxy-terminated PDMS. Through this route it was possible to tune the pore size and to engineer the surface chemistry (e.g. hydrophobicity) of ceramic membranes in favor of non-polar organic solvent permeation. Reproducible results were obtained for filtration experiments with hexane, toluene and isopropanol (IPA). As expected, higher permeabilities were found for non-polar solvents than for more polar solvents (resp. 4.870.1 l m 2 h 1 bar 1 for hexane, 3.170.5 l m 2 h 1 bar 1 for toluene and 0.5470.04 l m 2 h 1 bar 1 for IPA). A Molecular Weight Cut Off (MWCO) of 500710 Da was determined. Stability tests in hexane, toluene and IPA have shown that these newly developed membranes were stable in all these solvents during testing periods of up to 170 days.
Original languageEnglish
Pages (from-to)24-32
JournalJournal of membrane science
Volume463
DOIs
Publication statusPublished - 2014

Fingerprint Dive into the research topics of 'Development of a PDMS-grafted alumina membrane and its evaluation as solvent resistant nanofiltration membrane'. Together they form a unique fingerprint.

  • Cite this