CROSSLINKED THERMALLY-REARRANGED POLY(BENZOXAZOLE-IMIDE) COPOLYMER HOLLOW-FIBER GAS-SEPARATION MEMBRANE, AND METHOD FOR PREPARING SAME

摘要

The present invention relates to techniques for preparing a thermally-rearranged poly(benzoxazole-imide) copolymer hollow-fiber membrane having a crosslinking structure by the crosslinking reaction and subsequent thermal rearrangement of an ortho-hydroxy polyimide copolymer hollow-fiber membrane, and for applying the same for gas separation. The thermally-rearranged poly(benzoxazole-imide) copolymer hollow-fiber gas-separation membrane having a crosslinking structure prepared according to the present invention has a thin effective selective layer, has excellent mechanical properties as well as excellent gas permeability and selectivity, and thus may be modularized and commercialized.