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Microporous polymeric composite membranes with advanced film properties: pore intercalation yields excellent CO2 separation performance

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Abstract

Polymers of intrinsic microporosity (PIMs) are revolutionary gas separation materials because of their ultra-high permeability, but suffer from low gas pair selectivity (for example CO2/N2) and poor durability due to brittleness. Here we present a simple solution to these problems by blending PIM-1 with compatible polymer blend composed of PIM-1 and an ether side chain polyphosphazene (MEEP80), which possesses better mechanical flexibility and higher CO2/N2 selectivity than the native PIM-1 while maintaining high CO2 permeability. Under mixed gas test conditions, a blend of 25 wt% MEEP80 in PIM-1 has a CO2 permeability of 2440 barrer and a CO2/N2 selectivity of 39 under mixed gas testing conditions, putting it among the best known polymers for CO2/N2 separation.

Graphical abstract: Microporous polymeric composite membranes with advanced film properties: pore intercalation yields excellent CO2 separation performance

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Publication details

The article was received on 31 Jul 2018, accepted on 26 Oct 2018 and first published on 26 Oct 2018


Article type: Communication
DOI: 10.1039/C8TA07424K
Citation: J. Mater. Chem. A, 2018, Advance Article
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    Microporous polymeric composite membranes with advanced film properties: pore intercalation yields excellent CO2 separation performance

    A. K. Sekizkardes, V. A. Kusuma, J. S. McNally, David W. Gidley, K. Resnik, S. R. Venna and D. Hopkinson, J. Mater. Chem. A, 2018, Advance Article , DOI: 10.1039/C8TA07424K

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