Poly(acrylic acid)-based Blended Membranes with Highly-Loading Poly(ethylene glycol) for CO<sub>2</sub> Separation
발표자
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초록
내용
We report poly(acrylic acid) (PAA)/PEG blend membranes by a simple physical mixing with an ethanol solvent. PAA/PEG blend membranes form hydrogen bonds with the carbonyl group of PAA and the hydroxyl group of the PEG. We demonstrate controllable gas separation performance depending on the various PEG concentrations, which have high CO2 affinity. The PAA/PEG blend membranes demonstrate enhanced CO2 gas separation performance by high CO2 affinity through the polar ether portion of the ethylene oxide (EO) unit. As a result, the PAA/PEG(1:9) blend membrane shows the highest CO2 gas separation performance with high CO2 affinity owing to the amorphous PEG-rich phase.