Crosslinked copolyazoles with a zwitterionic structure for organic solvent resistant membranes

摘要: The preparation of crosslinked membranes with a zwitterionic structure based on facile reaction between newly synthesized copolyazole free OH groups and (3-glycidyloxypropyl)trimethoxysilane (GPTMS) is reported. new OH-functionalized soluble in common organic solvents, such as tetrahydrofuran (THF), dimethylsulfoxide (DMSO), N,N′-dimethylformamide (DMF) N-methyl-2-pyrrolidone (NMP) can be easily processed by phase inversion. After crosslinking GPTMS, the acquire high solvent resistance. We show membrane performance influence conditions thermal stability, surface polarity, pore morphology, By using UV-spectroscopy we monitored resistance four aggressive solvents (THF, DMSO, DMF NMP) for 30 days. this time, only minor changes (less than 2%) were detected subjected to 6 hours or longer. Our data suggest that novel used industrial applications wide harsh environments presence solvents.