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Brominated Poly(2,6-diphenyl-1,4-phenylene oxide) and Its Silica Nanocomposite Membranes for Gas Separation.
- Source :
-
Industrial & Engineering Chemistry Research . Apr2007, Vol. 46 Issue 8, p2567-2575. 9p. - Publication Year :
- 2007
-
Abstract
- Brominated poly(2,6-diphenyl-1,4-phenylene oxide) (BPPOdp) is synthesized as a new membrane material for gas separation. BPPOdpforms flexible membranes with higher CO2permeability (PCO278 Barrer) and selectivity (CO2/N230) than poly(2,6-dimethyl-1,4-phenylene oxide) (PPOdm) membranes. BPPOdpalso forms nanocomposite membranes with silica nanoparticles. The nanocomposite membranes have a greatly enhanced CO2permeability while maintaining the CO2/N2and CO2/CH4selectivities of the pure BPPOdpmembranes. The CO2permeability increases as the silica content increases in the membrane. The 10-nm silica nanoparticles are more effective at increasing the CO2permeability than the 30-nm silica nanoparticles. Mechanism studies show that the enhanced permeability results from the nanogaps between the silica nanoparticles and the polymer chains due to their incompatibility. [ABSTRACT FROM AUTHOR]
- Subjects :
- *BROMINE
*PERMEABILITY
*SEPARATION of gases
*NANOPARTICLES
Subjects
Details
- Language :
- English
- ISSN :
- 08885885
- Volume :
- 46
- Issue :
- 8
- Database :
- Academic Search Index
- Journal :
- Industrial & Engineering Chemistry Research
- Publication Type :
- Academic Journal
- Accession number :
- 24703520
- Full Text :
- https://doi.org/10.1021/ie061494x