Asymmetric superstructure formed in a block copolymer via phase separation

Klaus-Victor Georg Peinemann*, Volker Abetz, Peter F.W. Simon

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

538 Scopus citations

Abstract

Self-assembly of amphiphilic block copolymers into well-ordered structures has attracted significant interest over the past decade. An especially attractive application of block-copolymer self-assembly is the formation of isoporous membranes. A major problem in this process is the lack of sufficient long-range order and the difficulty of up-scaling due to the time-consuming preparation steps. Here, we report an innovative and simple method to prepare isoporous membranes with nanometre-sized pores. The combination of the industrially well-established membrane formation method by non-solvent-induced phase separation with the self-assembly of a block copolymer is demonstrated. The result is the creation of an integral asymmetric membrane of a block copolymer with a highly ordered thin layer on top of a non-ordered sponge-like layer. This straightforward and very fast one-step procedure for membrane formation is reported for the first time. The developed membrane has the potential for highly selective separation.

Original languageEnglish (US)
Pages (from-to)992-996
Number of pages5
JournalNature Materials
Volume6
Issue number12
DOIs
StatePublished - Jan 1 2007

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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