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Polysulfone/silica nanoparticle mixed-matrix membranes for gas separation

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Academic year: 2021

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Figure

Fig. 1. Thermal degradation of unfilled and a variety of silica-filled polysulfone matrix membranes.
Fig. 3. SEM images of cross-sections of polysulfone containing silica nanoparticles: (1) 5 vol.%, (2) 10 vol.%, (3) 15 vol.%, and (4) 20 vol.% taken at a magnification of 50,000.
Fig. 4. Enhancement of permeability (i.e., ratio of permeability of silica-filled polymer to that of unfilled polymer) of polysulfone–silica mixed-matrix  mem-branes to a variety of penetrants as a function of silica volume fraction at 35 ◦ C and p of 4.4
Fig. 5. Void vol.% derived by (e.g. Eq. (11)) the difference between theoreti- theoreti-cal and measured density in polysulfone/silica mixed-matrix membranes as a function of silica volume fraction.
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