Abstract
Poly(sulfone-amide) copolymers were synthesized from isophthaloyl dichloride (IPC) and mixed diamines which consisted of various ratios of bis(3-aminophenyl)sulfone (3DDS) and m-phenylenediamine (MPD), and permeabilities of H2 and CO through the polymer membranes were measured at 30°C. The permeability coefficient for H2 (PH2) of the poly(sulfone-amide) of which the diamine component is 3DDS was 1.5×10−10 cm3·cm cm−2·s·cm Hg, and the permeability ratio for H2 relative to CO (PH2/PCO) was 150. When the mixed diamines contained 30 mol% of MPD, PH2 was 1.5×10−10 cm3·cm cm−2·s·cm Hg, and PH2/PCO was 185, the maximum value for these copolymers. The copolymers derived from p-phenylenediamine (PPD) in place of MPD showed decrease in PH2/PCO. These results suggest that a bent structure is important to obtain a compact structure in the poly(sulfone-amide) membranes.
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Sakaguchi, Y., Tokai, M., Kawada, H. et al. Separation of H2 and CO through Poly(sulfone-amide) Membranes II. Highly Permselective Membranes Containing Bis(3-aminophenyl)sulfone as a Diamine Component. Polym J 20, 365–370 (1988). https://doi.org/10.1295/polymj.20.365
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DOI: https://doi.org/10.1295/polymj.20.365
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