Hybrid membranes based on SiO2/polyether-b-polyamide: Morphology and applications

Maurício L. Sforça, Inez V.P. Yoshida*, Cristiano P. Borges, Suzana Nunes

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

22 Scopus citations

Abstract

Hybrid materials were prepared incorporating silica networks by the sol-gel process into the poly(amide-b-polyether) block copolymer PEBAX®. PEBAX®/ silica hybrids were characterized by transmission electron microscopy, atomic force microscopy, differential scanning calorimetry, and X-ray diffraction. The pervaporation of phenol from dilute aqueous solutions through hybrid membranes was investigated. Films prepared with lower silica contents showed better dispersed inorganic networks and were more selective in the pervaporation of phenol/water solutions. Films prepared with higher silica contents had a clear phase-separated morphology with lower performance in pervaporation.

Original languageEnglish (US)
Pages (from-to)178-185
Number of pages8
JournalJournal of Applied Polymer Science
Volume82
Issue number1
DOIs
StatePublished - Jul 19 2001

Keywords

  • Atomic force microscopy
  • Hybrid organic-inorganic
  • Membrane-separation process
  • Polyether-b-polyamide block copolymer
  • Tetraethoxysilane

ASJC Scopus subject areas

  • Chemistry(all)
  • Surfaces, Coatings and Films
  • Polymers and Plastics
  • Materials Chemistry

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