Sorption of methane, nitrogen, carbon dioxide, and water in matrimid 5218

摘要

The sorption of the light gases CH_4,N_2,CO_2 as well as water into polymer films prepared from a commercial sample of 3,3′-4, 4′-benzophenone tetracarboxylic-dianhydride diaminophenylindane (Matrimid 5218) are measured. The light gas isotherms follow standard dual- sorption behavior for polymeric films with the Henry's Law coefficient correlated to the Lennard-Jones well depth parameter. Water sorption behavior was similar to rubbery polymers, that of significant adsorption into the polymeric matrix and was modeled by Henry's law exclusively.