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Journal of Polymer Research
Erschienen in: Journal of Polymer Research 1/2014

01.01.2014 | Original Paper

Improving CO2 separation performance of the polyethylene glycol (PEG)/polytrifluoropropylsiloxane (PTFPMS) blend composite membrane

verfasst von: Fei Nie, Gaohong He, Wei Zhao, Jia Ju, Yuanfa Liu, Yan Dai

Erschienen in: Journal of Polymer Research | Ausgabe 1/2014

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Abstract

Polyethylene glycol (PEG) as a promoting material for CO2 separation performance of a composite membrane is introduced into the polytrifluoropropylmethylsiloxane (PTFPMS) network to form a blend selective layer coated on a porous polyetherimide (PEI) support membrane. The maximum blend ratio of PEG to PTFMS in mass is determined for PEG-400, PEG-600, and PEG-1000 at 0.5, 0.2 and 0.2 from the blend solution status observed by an optical microscope. The miscibility of PEG and PTFPMS is verified from one peak of the blend film in DSC characterization. Furthermore, the interaction between PEG and PTFPMS is van der Waals force from the decreasing strength of ether group in ATR-FTIR analysis. The stability of the PEG/PTFPMS blend composite membrane is investigated with pure N2, O2, and CO2 permeation experiments under the transmembrane pressure difference up to 1.0 MPa. The N2 permeation rate of the PEG400/PTFPMS blend composite membrane with a blend ratio of 0.2 is 2.11 GPU, while the O2/N2 and CO2/N2 selectivities are improved to 2.67 and 26.67, respectively, which are higher than those of pure PTFPMS composite membrane that is 2.2 and 13.79, respectively.
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Metadaten
Titel
Improving CO2 separation performance of the polyethylene glycol (PEG)/polytrifluoropropylsiloxane (PTFPMS) blend composite membrane
verfasst von
Fei Nie
Gaohong He
Wei Zhao
Jia Ju
Yuanfa Liu
Yan Dai
Publikationsdatum
01.01.2014
Verlag
Springer Netherlands
Erschienen in
Journal of Polymer Research / Ausgabe 1/2014
Print ISSN: 1022-9760
Elektronische ISSN: 1572-8935
DOI
https://doi.org/10.1007/s10965-013-0319-x

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