High-performance composite hollow fiber membrane for flue gas and air separations

Can Zeng Liang, Wai Fen Yong, Tai Shung Chung*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

60 Scopus citations

Abstract

A defect-free membrane with a very high gas permeance is greatly attractive to both academia and industry. Thin film composite (TFC) membranes are promising candidates. However, it is always challenging to have a reproducible and up-scalable method to fulfill the needs. Herein, we report a novel and straightforward strategy to fabricate a high-performance hollow fiber composite membrane using a crosslinked polydimethylsiloxane (PDMS) with a high inherent viscosity obtained from a novel post-crosslinking method. The evolution of inherent viscosity with various cross-linking conditions and substrate morphology from different spinning conditions have been investigated. The resultant defect-free composite membrane shows excellent O2 and CO2 permeances higher than 1000 and 5000 GPU, respectively; while the corresponding selectivities of O2/N2 and CO2/N2 are about 2 and 11, respectively. The newly developed methods may provide useful insights to fabricate next-generation high-performance composite membranes for gas separation.

Original languageEnglish (US)
Pages (from-to)367-377
Number of pages11
JournalJournal of Membrane Science
Volume541
DOIs
StatePublished - 2017

Keywords

  • Composite hollow fiber membrane
  • Crosslinked PDMS
  • Flue gas
  • Gas separations
  • Oxygen enrichment

ASJC Scopus subject areas

  • Biochemistry
  • Materials Science(all)
  • Physical and Theoretical Chemistry
  • Filtration and Separation

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