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- W2890974241 abstract "Poly(ether sulfone) (PES), because of its low chain mobility and high gas selectivity, was selected as a gas‐separation membrane. Because poly(ethylene glycol) (PEG) contains polar ether groups favorable for carbon dioxide (CO 2 ) capture, we investigated the effects of PEG on the CO 2 /CH 4 and CO 2 /N 2 separation properties of PES–PEG blend membranes. PEG with different molecular weights (4000, 6000, and 10,000) and concentrations of up 30 wt % was added to PES. Scanning electron microscopy and wide‐angle X‐ray diffraction analyses on the blends confirmed the uniformity and dense surfaces of the membranes and no changes in the crystallinity, respectively. Fourier transform infrared spectra indicated good interactions between the PEG and PES segments. Gas permeation tests showed that with increasing PEG molecular weight, its weight fraction permeability of CH 4 and CO 2 increased, whereas the permeability of O 2 and N 2 decreased. The best composition of PES–PEG was a 70/30 ratio; with this composition, the selectivities of CO 2 /N 2 and CO 2 /CH 4 were enhanced by 64 and 14%, respectively, compared to that of the pure membrane. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018 , 135 , 46845." @default.
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- W2890974241 date "2018-09-23" @default.
- W2890974241 modified "2023-09-30" @default.
- W2890974241 title "Gas-separation behavior of poly(ether sulfone)-poly(ethylene glycol) blend membranes" @default.
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- W2890974241 doi "https://doi.org/10.1002/app.46845" @default.
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