Intrinsically Microporous Polymer Nanosheets for High-Performance Gas Separation Membranes

Marzieh Tamaddondar, Andrew B. Foster, Jose M. Luque-Alled, Kadhum J. Msayib, Mariolino Carta, Sara Sorribas, Patricia Gorgojo, Neil B. McKeown, Peter M. Budd*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Microporous polymer nanosheets with thicknesses in the range 3–5 nm and with high apparent surface area (Brunauer–Emmett–Teller surface area 940 m2 g−1) are formed when the effectively bifunctional (tetrafluoro) monomer used in the preparation of the prototypical polymer of intrinsic microporosity PIM-1 is replaced with an effectively tetrafunctional (octafluoro) monomer to give a tightly crosslinked network structure. When employed as a filler in mixed-matrix membranes based on PIM-1, a low loading of 0.5 wt% network-PIM-1 nanosheets gives rise to enhanced CO2 permeability and CO2/CH4 selectivity, compared to pure PIM-1.

Original languageEnglish
Article number1900572
JournalMacromolecular Rapid Communications
Early online date17 Dec 2019
DOIs
Publication statusE-pub ahead of print - 17 Dec 2019

Keywords

  • crosslinking
  • gas separation
  • mixed matrix membranes
  • nanosheets
  • network-PIM-1
  • polymers of intrinsic microporosity

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