Microporous polymeric composite membranes with advanced film properties: pore intercalation yields excellent CO2 separation performance
- National Energy Technology Lab. (NETL), Pittsburgh, PA, (United States); AECOM, Pittsburgh, PA (United States)
- Idaho National Lab. (INL), Idaho Falls, ID (United States)
- Univ. of Michigan, Ann Arbor, MI (United States)
- National Energy Technology Lab. (NETL), Pittsburgh, PA, (United States)
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. In this paper, 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.
- Research Organization:
- National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV, and Albany, OR (United States)
- Sponsoring Organization:
- USDOE Office of Fossil Energy (FE); USDOE Office of Fossil Energy and Carbon Management (FECM)
- Grant/Contract Number:
- FE0004000
- OSTI ID:
- 1509702
- Alternate ID(s):
- OSTI ID: 1480556
- Report Number(s):
- CONTR-PUB-577; JMCAET
- Journal Information:
- Journal of Materials Chemistry. A, Vol. 6, Issue 45; ISSN 2050-7488
- Publisher:
- Royal Society of ChemistryCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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