Abstract
A series of poly (ethylene oxide) (PEO) membranes with star-like structures for CO2/ H2 separation were prepared by the photo-polymerization method. The structure of PEO membrane was characterized by Fourier transform infrared spectroscopy (FTIR). The thermal property and inter-segmental distance of polymer chain were investigated by differential scanning calorimetry and wide-angle X-ray diffraction, respectively. The density was determined by hydrostatic weighing method. The gas permeability, solubility and diffusivity of CO2 and H2 were investigated in the star-like PEO membranes. The relationship between gas permeation performances and physical properties was also discussed. The membrane exhibits outstanding CO2 permeability (about 9.7×10-11 cm3 (STP) cm/cm2/s/Pa) and CO2/H2 selectivity (about 11) compared with other membranes.
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More From: Journal of Wuhan University of Technology-Mater. Sci. Ed.
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