Block copolymer/homopolymer dual-layer hollow fiber membranes

Roland Hilke, Pradeep Neelakanda, Ali Reza Behzad, Suzana Pereira Nunes, Klaus-Viktor Peinemann

Research output: Contribution to journalArticlepeer-review

29 Scopus citations

Abstract

We manufactured the first time block copolymer dual-layer hollow fiber membranes and dual layer flat sheet membranes manufactured by double solution casting and phase inversion in water. The support porous layer was based on polystyrene and the selective layer with isopores was formed by micelle assembly of polystyrene-. b-poly-4-vinyl pyridine. The dual layers had an excellent interfacial adhesion and pore interconnectivity. The dual membranes showed pH response behavior like single layer block copolymer membranes with a low flux for pH values less than 3, a fast increase between pH4 and pH6 and a constant high flux level for pH values above 7. The dry/wet spinning process was optimized to produce dual layer hollow fiber membranes with polystyrene internal support layer and a shell block copolymer selective layer.
Original languageEnglish (US)
Pages (from-to)39-44
Number of pages6
JournalJournal of Membrane Science
Volume472
DOIs
StatePublished - Dec 2014

ASJC Scopus subject areas

  • Biochemistry
  • Filtration and Separation
  • Materials Science(all)
  • Physical and Theoretical Chemistry

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