Abstract
Microporous polymer nanosheets with thicknesses in the range 3-5 nm and with high apparent surface area (BET 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 language | English |
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Article number | 1900572 |
Pages (from-to) | 1-8 |
Number of pages | 8 |
Journal | Macromolecular rapid communications |
Volume | 41 |
Issue number | 2 |
Early online date | 17 Dec 2019 |
DOIs | |
Publication status | Published - 2020 |
Keywords
- Polymers of intrinsic microporosity (PIMs)
- network-PIM-1
- nanosheets
- crosslinking
- mixed matrix membranes (MMMs)
- gas separation