| 摘要 |
<p>A composite membrane excellent in the resistance to organic solvent, heat and organic vapor and usable for pervaporation, gas separation and reverse osmosis, which is composed of a porous membrane mainly comprising a polymer having repeating units of formula (I) and an active layer formed thereon: -( Ph - S - Ph SO2 -)n (I) wherein Ph represents phenyl and n is a natural number.</p> |
