From micelle supramolecular assemblies in selective solvents to isoporous membranes

Suzana Pereira Nunes, Madhavan Karunakaran, Pradeep Neelakanda, Ali Reza Behzad, Bobby Hooghan, Rachid Sougrat, Haoze He, Klaus-Viktor Peinemann

Research output: Contribution to journalArticlepeer-review

91 Scopus citations

Abstract

The supramolecular assembly of PS-b-P4VP copolymer micelles induced by selective solvent mixtures was used to manufacture isoporous membranes. Micelle order in solution was confirmed by cryo-scanning electron microscopy in casting solutions, leading to ordered pore morphology. When dioxane, a solvent that interacts poorly with the micelle corona, was added to the solution, polymer-polymer segment contact was preferential, increasing the intermicelle contact. Immersion in water gave rise to asymmetric porous membranes with exceptional pore uniformity and high porosity. The introduction of a small number of carbon nanotubes to the casting solution improved the membrane stability and the reversibility of the gate response in the presence of different pH values. © 2011 American Chemical Society.
Original languageEnglish (US)
Pages (from-to)10184-10190
Number of pages7
JournalLangmuir
Volume27
Issue number16
DOIs
StatePublished - Aug 16 2011

ASJC Scopus subject areas

  • Spectroscopy
  • Materials Science(all)
  • Surfaces and Interfaces
  • Electrochemistry
  • Condensed Matter Physics

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