Polymer electrolyte membranes derived from novel fluorine-containing poly(arylene ether ketone)s by controlled post-sulfonation

Novel ultrafiltration membranes with adjustable charge density based on sulfonated poly(arylene ether sulfone) block copolymers and their tunable protein separation performance

“…However, the IEC values of membranes are lower than, for instance, those of other reported negatively charged membranes in the literature[18,31,32,37,41]. These other negatively charged membranes in the literature were prepared under different conditions and developed for other applications.…”

Synthesis and investigation of sulfonated poly(p-phenylene)-based ionomers with precisely controlled ion exchange capacity for use as polymer electrolyte membranes

“…Various sulfonated polymer materials have been synthesised via post-sulfonation methods due to their simplicity and wide utility in materials selectivity, including use of commercially available polymers. 18,19 While post-sulfonation is a simple and easy process, some serious side-reactions, such as cross-linking and chain scission reactions, might occur during the reaction. The other synthetic method is the so-called preceding sulfonation of precursor monomers.…”

New poly(aryl ether ketone)s containing 2,6-diphenylpyridyl units and diphenylphosphinophenyl pendant groups

“…Relatively speaking, more monomers can be obtained easily by introducing substituents into aromatic rings such as methyl, trifluoromethyl, butyl, halogen, phenyl, and other groups, more functional PEKs can be developed, and the performance of PEKs can be improved accordingly. 19 –31 Although many PEKs with pendant groups are well documented, there are no studies covering PEKs containing triphenylphosphine pendant groups. In addition, it was found that insertion of rigid pyridine ring into PEK macromolecular chains could improve their thermal stability, chemical stability, and solubility.…”