“…Thus it is valuable to develop polymeric membranes with outstanding thermal stability. Some research has been done to develop polymeric membranes with excellent thermal stability, such as polybenzimidazole (PBI), 18,19 poly(phthalazine ether sulfone ketone) (PPESK), 20,21 sulfonated poly(phthalazinone ether sulfone) (SPPES), 22 poly(phthalazione ether nitrile ketone) (PPENK), 23 poly(phthalazinone ether amide) (PPEA), 24 and poly(pyromellitic dianhydride-co-4,4-oxydianiline) (PMDA/ODA PI). 25 However, the poorer hydrophilic property and higher price of these materials limit their application.…”