Gas transport through mixed matrix membranes composed of polysulfone and copper terephthalate particles
PBN-AR
Instytucja
Centrum Materiałów Polimerowych i Węglowych Polskiej Akademii Nauk
Informacje podstawowe
Główny język publikacji
en
Czasopismo
Microporous and Mesoporous Materials
ISSN
1387-1811
EISSN
Wydawca
Elsevier
DOI
Rok publikacji
2016
Numer zeszytu
Strony od-do
120–134
Numer tomu
235
Liczba arkuszy
Słowa kluczowe
en
Mixed-matrix membranes;
Copper terephthalate;
Polysulfone;
Permeability;
Gas transport
Streszczenia
Język
en
Treść
In this work gas transport and structural investigations of heterogeneous membranes composed of polysulfone and copper terephthalate (CuTPA) particles are reported. Three types of CuTPA, varying in surface area, pore volume and pore size distribution, as it was shown by nitrogen physisorption, were investigated as membrane fillers. Structural characterization of pure CuTPA and composite membranes was carried out by positron annihilation lifetime spectroscopy, calorimetry, derivatography, electron microscopy, X-ray diffraction and density measurements. CuTPA possessing high porosity was found to increase permeability of heterogeneous membranes to N2, O2, He, CO2. In contrast, permeability decrease was observed for two other types of CuTPA with lower porosity. Additionally, membranes containing highly porous CuTPA were annealed at two different temperatures and it was found that higher temperature results in higher both membrane permeability and selectivity. For example, CO2 permeability for membrane annealed at 150 °C was 1.65-times higher than that for pure PSF, whereas membrane annealed at 200 °C was 3.3-times more permeable. This significant change in membrane permeability was ascribed to residual solvent removal from CuTPA pores.
Cechy publikacji
oryginalny artykuł naukowy
Inne
System-identifier
PX-57b2d9a1c2dcd71a5c339c0c
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