Novel approach to fabricate carbon molecular-sieve membranes based on consideration of interpenetrating networks

Pei Shi Tin, Tai-Shung Chung*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

Carbon molecular-sieve membranes (CMSMs) have shown great potential for gas separation. They exhibit high selectivity by permitting effective size- and shape-separation between gas molecules of similar molecular dimensions. Hence, the control of their pore size is very important. While previous studies have focused on the conditions of pyrolysis and its effect on CMSM properties, a novel approach is reported here whereby the precursor polymer is chemically modified prior to pyrolysis and the resultant CMSM was investigated for its gas separation properties. Pyrolysis of chemically crosslinked and uncrosslinked Matrimid® resulted in a change in d-spacing from 5.6 to 3.6 and 3.7 Å, respectively. The crosslinked CMSM also exhibited greater ordering in its packing. The Matrimid-derived CMSMs exhibited excellent separation properties for CO2/CH4.

Original languageEnglish (US)
Pages (from-to)1247-1250
Number of pages4
JournalMacromolecular Rapid Communications
Volume25
Issue number13
DOIs
StatePublished - Jul 5 2004

Keywords

  • Crosslinking
  • Gas separation
  • Membranes
  • Modification
  • Polyimide precursors

ASJC Scopus subject areas

  • Organic Chemistry
  • Polymers and Plastics
  • Materials Chemistry

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