GAS SEPARATION MEMBRANE, GAS SEPARATION MODULE, GAS SEPARATION DEVICE, GAS SEPARATION METHOD, GAS SEPARATION MEMBRANE COMPOSITION, AND GAS SEPARATION MEMBRANE PRODUCTION METHOD

摘要

A gas separation membrane is provided which can achieve gas permeability and gas separation selectivity at a desired high level, and can further exhibit the excellent separation membrane performance mentioned above (gas permeability, gas separation selectivity) persistently, even in the presence of plasticizing impurities, a gas separation module using said gas separation membrane, a gas separation device, a gas separation method, a gas separation membrane composition, and a gas separation membrane production method are provided. This gas separation membrane has a polyimide compound that includes a structural unit represented by expression (1). In expression (1), R^a1 represents a parent nucleus of a specific structure. L^a represents an n+1 valent linking group, and n is an integer greater than or equal to 1. A represents a hydrophilic group other than an amino group, with the CLogP value of less than or equal to 0.5.