Facilitated transport by hybrid POSS®-Matrimid®-Zn2+ nanocomposite membranes for the separation of natural gas

Fuyun Li, Yi Li, Tai-Shung Chung*, Sibudjing Kawi

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

87 Scopus citations

Abstract

Hybrid POSS® Octa Amic Acid-Matrimid® nanocomposite membranes have been successfully fabricated. The study shows that the nano-sized POSS® could be distributed uniformly over the Matrimid® matrix with an intimate polymer-particle interface. This is presumably ascribed to the existence of intermolecular hydrogen bonding between the carboxylic groups of POSS® and Matrimid®. The excellent dispersion of POSS® with eight carboxylic functional groups each moiety provides a high-density ionic binding platform for the introduction of Zn2+, which is the engine of the facilitated transport to some specific gases. The best gas separation performance is observed for the hybrid POSS®-Matrimid®-Zn2+ nanocomposite membrane (20wt% POSS®-Matrimid®-0.3M ZnCl2), in which, the selectivity of CO2/CH4 and O2/N2 increases by 70% and 30%, respectively, when compared with untreated nanocomposite membrane (20wt% POSS®-Matrimid®).

Original languageEnglish (US)
Pages (from-to)14-21
Number of pages8
JournalJournal of Membrane Science
Volume356
Issue number1-2
DOIs
StatePublished - Jul 1 2010

Keywords

  • Facilitated transport
  • Gas separation performance
  • Ionic binding
  • Nanocomposite membranes
  • POSS Octa Amic Acid

ASJC Scopus subject areas

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

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