CROSSLINKED THERMALLY REARRANGED POLY(BENZOXAZOLE-CO-IMIDE) HOLLOW FIBER GAS SEPARATION MEMBRANE AND PREPARATION METHOD THEREOF

摘要

The present invention relates to a technique which produces a thermally rearranged poly(benzoxazole-imide) hollow fiber gas separation membrane having a cross-linked structure by cross-linking reaction and subsequent thermal rearrangement of an ortho-hydroxy polyimide copolymer hollow fiber, and applies the same to gas separation (membrane for flue gas separation is excluded). The thermally rearranged poly(benzoxazole-imide) hollow fiber gas separation membrane having a cross-linked structure (membrane for flue gas separation is excluded) has the thickness of an effective selection layer which is thin, has excellent mechanical properties, and can enable modulation and commercialization due to excellent air permeability and selectivity.