| 摘要 |
<p>Provided are a gas separation membrane and composite membrane having excellent gas permeability and separation selectivity, a method for producing the gas separation membrane and composite membrane, a method for separating a gas mixture, and a module and separation device that use the method for separating a gas mixture. The gas separation membrane contains a polymer comprising at least one partial structure represented by general formula (I) and at least one partial structure represented by general formula (II) (I) (II) (where R1, R2, and Ra are each independently hydrogen atoms or substituent groups; J1 and J2 are -CO-, -COO-, -CONR20-, -OCO-, methylene groups, phenylene groups, or -C6H5CO- groups; R20 is a hydrogen atom, alkyl group, aryl group or aralkyl group; L1 is a linking group of n valency; W1 and W2 are single bonds or divalent linking groups; each of the plurality of J1, W1, R1, J2, W2, R2, and Ra can be the same or different; and n is an integer of 2 or greater). The Ra in general formula (I) and/or the L1 in general formula (II) is a fluorine atom.</p> |
