Synthesis of Sulfonated Poly(arylene ether sulfone)-b-Poly(arylene ether ketone) Copolymers for Proton Exchange Membrane Fuel Cell

2013 ◽  
Vol 798-799 ◽  
pp. 165-169
Author(s):  
Hai Dan Lin ◽  
Xiao Ying Yang ◽  
Cheng Xun Sun
Keyword(s):  
Molecular Weight ◽  
Proton Exchange Membrane ◽  
Proton Exchange ◽  
Multiblock Copolymers ◽  
H Nmr ◽  
Arylene Ether ◽  
Transmission Electron ◽  
Ether Ketone ◽  
Exchange Membrane ◽  
Sulfonated Poly

A new series of hydrophobic-hydrophilic multiblock copolymers derived from fluorine terminated poly (arylene ether ketone) as hydrophobic blocks and phenoxide terminated sulfonated poly (arylene ether sulfone) as hydrophilic blocks were successfully synthesized and evaluated for use as proton exchange membranes (PEMs). All the hydrophobic and hydrophilic oligomers were synthesized via molecular-weight controlled step growth polymerization of the monomers. 1H NMR spectra were used as characterization tool to determine the telechelic oligomers molecular weight and multiblock copolymers structure. The morphologies of multiblock copolymers were investigated by transmission electron microscopy (TEM), which showed they had a clear microphase-separated structure between the hydrophilic domains and hydrophobic domains. All the sulfonated poly (arylene ether sulfone)-b-poly (arylene ether ketone) copolymers can easily be cast into tough membranes for applications in proton exchange membrane.

Synthesis and Characterization of Sulfonated Poly(diphenyl ether ketone sulfone)s Containing Dibenzoylbenzene Moiety for Proton Exchange Membrane Fuel Cell

2012 ◽  
Vol 724 ◽  
pp. 412-415
Author(s):  
Md. Awlad Hossain ◽  
Young Don Lim ◽  
Dong Wan Seo ◽  
Soon Ho Lee ◽  
Hyun Chul Lee ◽  
...  
Keyword(s):  
Proton Exchange Membrane ◽  
Diphenyl Ether ◽  
Chlorosulfonic Acid ◽  
Exchange Capacity ◽  
Proton Exchange ◽  
H Nmr ◽  
Ft Ir ◽  
Ether Ketone ◽  
Exchange Membrane ◽  
Sulfonated Poly

Sulfonated poly (diphenyl ether ketone sulfone) s, SPDPEKSs were successfully synthesized for proton exchange membranes (PEMs). Poly (diphenyl ether ketone sulfone) s, PDPEKSs were prepared by the polycondensation of 4,4'-sulfonyldiphenol with 1,2-bis (4-fluorobenzoyl)-3,6-diphenylbenzene (BFBDPB) and 4-fluorophenylsulfone respectively, at 210 °C using anhydrous potassium carbonate as catalyst in sulfolane. PDPEKSs were followed by sulfonation using chlorosulfonic acid and concentrated sulfuric acid at two step reactions. Different contents of sulfonated unit of SPDPEKS (25, 35, 45 mol% of BFBDPB) were studied by FT-IR, 1H NMR spectroscopy, and thermogravimetric analysis (TGA). The ion exchange capacity (IEC), water uptake and proton conductivity of SPDPEKS were evaluated with increase of degree of sulfonation.

scholarly journals Synthesis of Highly Sulfonated Poly(arylene ether) Containing Multiphenyl for Proton Exchange Membrane Materials

2016 ◽  
Vol 2016 ◽  
pp. 1-8 ◽  
Author(s):  
Yi-Chiang Huang ◽  
Ruei-Hong Tai ◽  
Hsu-Feng Lee ◽  
Po-Hsun Wang ◽  
Ram Gopal ◽  
...  
Keyword(s):  
Proton Exchange Membrane ◽  
Hydrolytic Stability ◽  
Exchange Capacity ◽  
Proton Exchange ◽  
Chemical Structures ◽  
Arylene Ether ◽  
Transmission Electron ◽  
High Proton ◽  
Exchange Membrane ◽  
Sulfonated Poly

A series of sterically hindered, sulfonated, poly(arylene ether) polymers were synthesized by nucleophilic polycondensation reaction using 4,4′′′′-difluoro-3,3′′′′-bistrifluoromethyl-2′′,3′′,5′′,6′′-tetraphenyl-[1,1′;4′,1′′;4′′,1′′′;4′′′,1′′′′]-pentaphenyl and 4,4′-biphenol and were prepared through postpolymerization sulfonation. The chemical structures were confirmed by1H NMR. Subsequent to sulfonation, solvent-casting membranes were provided ion exchange capacity (IEC) values ranging from 0.39 to 2.90 mmol/g. Proton conductivities of membranes ranged from 143 to 228 mS/cm at 80°C under fully humidified conditions which were higher than that of Nafion 117. The membrane also exhibited considerably dimension stability, oxidative stability, and hydrolytic stability. The microphase structure was investigated by transmission electron microscopy (TEM) and the ionic aggregation of sulfonic acid groups exhibited spherical ionic clusters with well-developed phase separated morphology. The results indicated that the membranes are promising candidates for application as proton exchange membranes. This investigation demonstrates introducing multiphenylated moieties to create a high free volume polymer that provides dimensionally stable and high proton conductivity membranes.

Characterization of random and multiblock copolymers of highly sulfonated poly(arylene ether sulfone) for a proton-exchange membrane

2009 ◽  
Vol 114 (3) ◽  
pp. 1793-1802 ◽  
Author(s):  
Cui Liang ◽  
Tatsuo Maruyama ◽  
Yoshikage Ohmukai ◽  
Tomohiro Sotani ◽  
Hideto Matsuyama
Keyword(s):  
Proton Exchange Membrane ◽  
Proton Exchange ◽  
Multiblock Copolymers ◽  
Arylene Ether ◽  
Exchange Membrane ◽  
Sulfonated Poly

Synthesis and Characterization of Sulfonated Poly(Arylene Ether Sulfone) Multiblock Copolymers for Proton Exchange Membrane

2014 ◽  
Vol 989-994 ◽  
pp. 142-145
Author(s):  
Tong Xue ◽  
Zhao Xia Hu ◽  
Shou Wen Chen
Keyword(s):  
Sulfonic Acid ◽  
Proton Exchange Membrane ◽  
Proton Exchange ◽  
Multiblock Copolymers ◽  
High Proton Conductivity ◽  
Arylene Ether ◽  
High Proton ◽  
Exchange Membrane ◽  
Sulfonated Poly

A series of multiblock copolymers based on sulfonated poly (arylene ether sulfone) (bSPAES-SF) with highly rigid hydrophilic sulfonate blocks and flexible hydrophobic blocks were successfully synthesized by the condensation of sulfonated decafluorobiphenyl-terminated oligomers and the hydroxyl-terminated oligomers. The former oligomers were sulfonated by fuming sulfonic acid. The bSPAES-SF membranes with IEC of 1.26-1.70 mmol/g exhibited high proton conductivity, hydrolytic and dimensional stability.

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