Polymer electrolyte membranes based on poly(arylene ether sulfone) with pendant perfluorosulfonic acid

Fluorinated Poly(Arylene Ether)s

“…Chang et al [185] prepared SPAE ionomers, xx-PSU-S n (where xx = mol.% of the sulfonic acid group in the PSF repeating unit = 135, 160, and 200. respectively) with three different types of acidic groups (fluoroalkyl sulfonic, aryl sulfonic. and alkyl sulfonic acids).…”

Sulfonated polymers containing polyhedral oligomeric silsesquioxane (POSS) core for high performance proton exchange membranes

“…Comparing the two images, a cylinder-like morphology with domain size of around 100 nm is observed for POSS-(PMMA 26 -b-SPS 156 ) 8 , while a long and narrow fiberliked morphology with a excellent connectivity of ionic domains (around 30e40 nm) is observed for POSS-(PMMA 16 -b-SPS 200 ) 8 . In general, the formation of hydrophilic and hydrophobic domains depends on several factors, such as acidity, concentration and distribution of sulfonated groups, and difference in backbone/side chain mobility [29]. Star-shape 2 e (a) l and (b) proton conductivity of the membranes as a function of temperature at 100% RH.…”

Nanophase-Segregated Structures and Transport Properties in Sulfonated Poly(arylene ether sulfone) Multiblock Copolymer Membrane for Proton Exchange Membrane Fuel Cell

“…[60][61][62][63] The MD simulation method has provided detailed information on the nanophase-segregation and proton transport through the PEM system. 29 38 39 51-54 64-74 In our previous studies, we have used MD simulations to characterize various PEMs such as Nafion, 29 Dendrion, 51 52 S-PEEK, 53 54 sulfonated polystyrene, 38 sulfonated poly(arylene ether sulfone), 39 mainly focusing on the relationship between nanophase-segregation and transport properties. The lesson from these studies was that the proton conduction is enhanced as a function of the nanophase-segregation because the key requirements for high proton conduction such as the well-connected water channels and tight hydrogen bonding network are developed more through the nanophase-segregation.…”