Synthesis and properties of a novel poly(aryl ether ketone)s with quaternary ammonium pendant groups for anion exchange membranes

Anion exchange membranes based on tetra-quaternized poly(arylene ether ketone)

“…The residual weight of QPAEK-0.8 was a little more than that of QPAEK-0.6, this maybe because QPAEK-0.8 had higher molecular weight than QPAEK-0.6 inferred from Table 1. This oxidative stability was better than that for QMPAK-75 in our group's previous work [15]. This indicated that all of the AEMs had adequate oxidative stability to improve the durability of fuel cells.…”

“…The brominated copolymer BrPAEK-0.6 was obtained through a typical procedure of preparation as follows [15]. After MePAEK-0.6 (0.95 g, 1.676 mmol) was dissolved in 20 mL of 1,1,2,2-tetrachloroethane completely at room temperature in a 50 mL three-necked flask with magnetic stirring, the bromination agent NBS (0.7876 g, 4.4 mmol) and the initiator BPO (0.0536 g, 0.22 mmol) were added to the solution, and the reaction mixture was heated slowly to 85 ˚C with magnetic stirring under a nitrogen atmosphere.…”

“…Moreover, the direction of electrodialysis opposes that of methanol permeability in PEMFCs (from anode to cathode); thus, it can mitigate and even possibly eliminate fuel crossover [14]. Furthermore, various types of fuels, such as methanol, ethanol, or ethylene glycol, could be used because of the low overpotential for hydrocarbon fuel oxidation [15].…”

Preparation and characterization of imidazolium-functionalized poly (ether sulfone) as anion exchange membrane and ionomer for fuel cell application

“…7). This method is commonly used in the accelerated durability test of proton exchange membrane for PEMFCs [8,23], and it is now also adopted in the development of AEMs [24,25]. After treatment in Fenton's reagent for w200 h, the weight loss of PES-MeIm/OH-#4 was only 13% (Fig.…”

Synthesis, curing behavior, and thermal properties of fluorene-based benzoxazine-endcapped copoly(ether ketone ketone)s

“…The PAEK is used in a wide range of fields, such as polymer films, molding resins, coating, and insulating materials. Their excellent mechanical, electrical, and chemical properties promote them to be a better candidate for advanced materials [36][37][38]. The incorporation of PAEK into polybenzoxazines has been proved its capability to overcome the brittleness of these polymers.…”