Metal substituted sulfonated poly(2,6-dimethyl-1,4-phenylene oxide) hybrid membranes with magnetic fillers for gas separation

•Synthesis of metal substituted SPPO hybrid membranes for enhanced air separation.•Improvement of the mechanical and rheological hybrid membrane’s parameters.•Tuning permeability and selectivity by metal substitution into a matrix of hybrid SPPO.•A O2 permeability of 172 Barrer with a O2/N2 selectiv...

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Bibliographic Details
Published in:Separation and purification technology 2019-02, Vol.210, p.479-490
Main Authors: Rybak, Aleksandra, Rybak, Aurelia, Kaszuwara, Waldemar, Nyc, Mariusz, Auguścik, Monika
Format: Article
Language:English
Subjects:
Gas separation
Hybrid organic-inorganic membranes
Magnetic properties
Mechanical properties
Rheological parameters
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Summary:•Synthesis of metal substituted SPPO hybrid membranes for enhanced air separation.•Improvement of the mechanical and rheological hybrid membrane’s parameters.•Tuning permeability and selectivity by metal substitution into a matrix of hybrid SPPO.•A O2 permeability of 172 Barrer with a O2/N2 selectivity of 8 is achieved in binary gas test.•Positive influence of metal substitution on interaction between inorganic and organic phase. Magnetic inorganic-organic hybrid membranes based on metal (Na+ and Fe2+) substituted sulfonated poly(2,6-dimethyl-1,4-phenylene oxide) matrix and magnetic powders were prepared and characterized. It was stated that the magnetic membrane’s gas transport parameters (D, P, S and α) were improved with the rise of membrane’s saturation magnetization, remanence, magnetic particle content and type of polymer matrix. The modification of a polymer matrix by metal substitution and incorporation of magnetic powder had significantly changed membrane’s magnetic, mechanical (Rm and E) and rheological (G′ and G″) properties. Especially the introduction of Fe2+ ions (much higher magnetic susceptibility compared to Na+), and their potential interaction with magnetic powder resulted in improved properties. The mechanical and rheological parameters of the tested membranes were improved by the increase of the magnetic filler addition and selection of appropriate type of polymer matrix. The best resistance to elastic deformation had the hybrid FeSPPO membrane with high filler addition.
ISSN:1383-5866
1873-3794
DOI:10.1016/j.seppur.2018.08.032