Dense hydrophilic composite membranes for ultrafiltration

Suzana Pereira Nunes*, Maurício Luis Sforça, Klaus Viktor Peinemann

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

139 Scopus citations

Abstract

Dense hydrophilic composite membranes for ultrafiltration were prepared from an asymmetric porous PVDF support coated with a thin (< 1 μ) layer of polyether-block-polyamide copolymer. Membranes with a molecular weight cut-off between 800 and 4500 g/mol and water permeability between 2.3 and 9.41 h- m-2 bar-1 were obtained. The dry membrane surface was characterized as a dense non-porous layer when observed by scanning electron microscopy. When compared to other commercial membranes and to the non-coated porous PVDF support in the ultrafiltration of oil-water waste, the performance of the composite membranes was comparable to the Amicon YM30 cellulose membrane with lower susceptibility to fouling.

Original languageEnglish (US)
Pages (from-to)49-56
Number of pages8
JournalJournal of Membrane Science
Volume106
Issue number1-2
DOIs
StatePublished - Oct 13 1995
Externally publishedYes

Keywords

  • Fouling
  • Polyether-block-polyamide copolymer
  • Ultrafiltration

ASJC Scopus subject areas

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

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