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.
Highlights
Microporous polymer nanosheets with thicknesses in the range 3–5 nm for CO2/CH4 and CO2/N2 were redefined[6] on the basis of data for some new polymers of intrinsic microporosity (PIMs)
Membrane properties may be tailored by combining 2D materials or other fillers with processable polymers to form mixed matrix membranes (MMMs).[17]
The tetrafluoro-monomer utilized in the formance that could be achieved for industrially important gas synthesis of the prototypical polymer of intrinsic microporosity, pairs with the polymeric membranes available in 1991
Summary
Microporous Polymer Nanosheets for HighPerformance Gas Separation Membranes. Citation for published version: Tamaddondar, M, Foster, AB, Luque-Alled, JM, Msayib, KJ, Carta, M, Sorribas, S, Gorgojo, P, McKeown, NB & Budd, PM 2019, 'Intrinsically Microporous Polymer Nanosheets for High-Performance Gas Separation Membranes', Macromolecular Rapid Communications. Microporous polymer nanosheets with thicknesses in the range 3–5 nm for CO2/CH4 and CO2/N2 were redefined[6] on the basis of data for some new PIMs. The quest for high-performance gas sepaarea 940 m2 g−1) are formed when the effectively bifunctional (tetrafluoro) monom er 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. Organic framework nanosheets,[14] and covalent organic framework nanosheets.[15,16] Membrane properties may be tailored by combining 2D materials or other fillers with processable polymers to form mixed matrix membranes (MMMs).[17]
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