Reference of 301353-96-8, As an important bridge between the micro and macro material world, chemistry is one of the main methods and means for humans to understand and transform the material world. 301353-96-8, Name is P7C3, SMILES is BrC1=CC2=C(N(C3=C2C=C(C=C3)Br)CC(CNC4=CC=CC=C4)O)C=C1, belongs to benzoxazole compound. In a article, author is Ye, Lu, introduce new discover of the category.
Preparation and gas separation performance of thermally rearranged poly (benzoxazole-co-amide) (TR-PBOA) hollow fiber membranes deriving from polyamides
Flexible poly(benzoxazole-co-amide) (PBOA) gas separation hollow fiber membranes were successfully prepared deriving from ether-containing polyamide precursors by thermal densification with or without a supplementary coating treatment. Compared with polyimide precursors, thermally rearrangement in this work required lower treatment temperature but generated better mechanical properties. Both spinning process and thermal treatment conditions were systemically manipulated to intensify the membrane densification aiming at achieving greatly improved selectivity of the obtained TR-PBOA hollow fiber membranes. It was found that draft ratio had little contribution to selectivity enhancement. Separation performance was substantially improved when precursor fibers were dried using ethanol-hexane exchange method and then thermally treated at 350-390 degrees C TR hollow fibers obtained by combined thermal treatment with coating method exhibited the highest selectivity values in this study.
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Reference:
Benzoxazole – Wikipedia,
,Benzoxazole | C7H5NO – PubChem