Self-assembly in casting solutions of block copolymer membranes

Debora S. Marques, Ulla Vainio, Nicolas Moreno Chaparro, Victor M. Calo, Ali Reza Bezahd, Jed W. Pitera, Klaus-Viktor Peinemann, Suzana Pereira Nunes

Research output: Contribution to journalArticlepeer-review

77 Scopus citations

Abstract

Membranes with exceptional pore regularity and high porosity were obtained from block copolymer solutions. We demonstrate by small-angle X-ray scattering that the order which gives rise to the pore morphology is already incipient in the casting solution. Hexagonal order was confirmed in PS-b-P4VP 175k-b-65k solutions in DMF/THF/dioxane with concentrations as high as 24 wt%, while lamellar structures were obtained in more concentrated solutions in DMF or DMF/dioxane. The change in order has been understood with the support of dissipative particle dynamic modeling. © 2013 The Royal Society of Chemistry.
Original languageEnglish (US)
Pages (from-to)5557
JournalSoft Matter
Volume9
Issue number23
DOIs
StatePublished - 2013

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics

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