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Copoly (phthalazinone ether sulfone) (PPBES) is a novel material with excellent thermal resistance and good flexibility. PPBES ultrafiltration (UF) membranes were prepared with phase inversion method when N, N-dimethylacetamide (DMAc) was used as solvent and water was used as coagulation bath. Effects of different additives such as ethylene glycol monomethyl ether (EGME), glycol, propanol, butanone...
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