Gas permeability of patterned polydimethylsiloxane-grafted polyimide membranes fabricated by nanocasting method

Cheol Min Yun, Yu Nagase, Masaru Nakagawa

Research output: Contribution to journalArticlepeer-review

Abstract

We showed a new approach to fabricate separation membranes with enlarged surface areas by nanocasting and investigated the effects of the enlarged surface area on the gas permeability of polydimethylsiloxane (PDMS)-grafted polyimide membranes. A PDMSgrafted polyimide dissolving in solvent was cast onto a patterned nickel (Ni) substrate. The thermal crosslinking reactions occurring among intermolecular PDMS segments allowed the fabrication of insoluble patterned PDMS-grafted polyimide membranes by demolding. The patterned membranes showed higher gas permeability coefficients than the corresponding flat membranes and showed an increasing permeation selectivity for carbon dioxide.

Original languageEnglish
Pages (from-to)35-38
Number of pages4
JournalMolecular crystals and liquid crystals
Volume580
Issue number1
DOIs
Publication statusPublished - 2013 Sep 1

Keywords

  • Gas permeation coefficient
  • Grafted aromatic polyimide
  • Nanocasting
  • Polydimethylsiloxane
  • Separation membrane

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

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