Enhanced proton conductivity and relative selectivity of sulfonated poly(arylene ether ketone sulfone) proton exchange membranes by using triazole-grafted 3-Glycidyloxypropyltrimethoxysilane

2018 ◽  
Vol 291 ◽  
pp. 49-63 ◽  
Author(s):  
Hai Qiang Li ◽  
Xue Jiao Liu ◽  
Huiyun Yang ◽  
Zhe Wang ◽  
Jin He
Keyword(s):  
Proton Conductivity ◽  
Proton Exchange Membranes ◽  
Proton Exchange ◽  
Arylene Ether ◽  
Ether Ketone ◽  
Relative Selectivity ◽  
Sulfonated Poly

Characterization of Multiblock Sulfonated Poly(Arylene Ether Sulfone) as Proton Exchange Membranes

2013 ◽  
Vol 805-806 ◽  
pp. 1321-1324
Author(s):  
Hai Dan Lin ◽  
Xiao Ying Yang ◽  
Cheng Xun Sun
Keyword(s):  
Ion Exchange ◽  
Water Uptake ◽  
Proton Exchange Membranes ◽  
Exchange Capacity ◽  
Proton Exchange ◽  
Membrane Properties ◽  
Multiblock Copolymers ◽  
Arylene Ether ◽  
Ether Ketone ◽  
Sulfonated Poly

A new series of hydrophobic-hydrophilic multiblock sulfonated poly (arylene ether ketone)-b-poly (arylene ether ketone) copolymers were successfully synthesized and evaluated for use as proton exchange membranes (PEMs). The membrane properties of block copolymers including ion exchange capacities (IECs), water uptake and proton conductivities were characterized for the multiblock copolymers and compared with random sulfonated poly (arylene ether) s and other multiblock copolymer membranes at similar ion exchange capacity value. This series of multiblock copolymers showed moderate conductivities up to 0.063 S/cm at 80 °C with very low water uptake of 19%. Therefore, they are considered to be promising PEM materials for fuel cells.

High proton conductivity of sulfonated methoxyphenyl-containing poly(arylene ether ketone) for proton exchange membranes

RSC Advances ◽  
2015 ◽  
Vol 5 (130) ◽  
pp. 107982-107991 ◽  
Author(s):  
Bo Dong ◽  
Yan Wang ◽  
Jinhui Pang ◽  
Shaowei Guan ◽  
Zhenhua Jiang
Keyword(s):  
Mechanical Properties ◽  
Proton Conductivity ◽  
Proton Exchange Membranes ◽  
Proton Exchange ◽  
High Proton Conductivity ◽  
Arylene Ether ◽  
High Proton ◽  
Ether Ketone ◽  
Polyelectrolyte Membrane

A polyelectrolyte membrane based on sulfonated methoxyphenyl-containing poly(arylene ether ketone) (SMP-PAEK) was obtained, which exhibited suitable proton conductivities and excellent mechanical properties.

Relaxation of Proton Conductivity and Stress in Proton Exchange Membranes Under Strain

2006 ◽  
Vol 128 (4) ◽  
pp. 503-508 ◽  
Author(s):  
Dan Liu ◽  
Michael A. Hickner ◽  
Scott W. Case ◽  
John J. Lesko
Keyword(s):  
Stress Relaxation ◽  
Proton Conductivity ◽  
Proton Exchange Membranes ◽  
Deionized Water ◽  
Proton Exchange ◽  
Polymer Chains ◽  
Water Condition ◽  
Arylene Ether ◽  
Conduction Pathway ◽  
Sulfonated Poly

The stress relaxation and proton conductivity of Nafion 117 membrane (N117-H) and sulfonated poly(arylene ether sulfone) copolymer membrane with 35% sulfonation (BPSH35) in acid forms were investigated under uniaxial loading conditions. The results showed that when the membranes were stretched, their proton conductivities in the direction of the strain initially increased compared to the unstretched films. The absolute increases in proton conductivities were larger at higher temperatures. It was also observed that proton conductivities relaxed exponentially with time at 30°C. In addition, the stress relaxation of N117-H and BPSH35 films under both atmospheric and an immersed (in deionized water) condition was measured. The stresses were found to relax more rapidly than the proton conductivity at the same strains. An explanation for the above phenomena is developed based on speculated changes in the channel connectivity and length of proton conduction pathway in the hydrophilic channels, accompanied by the rotation, reorientation, and disentanglements of the polymer chains in the hydrophobic domains.

Sulfonated poly(arylene thioether ketone ketone sulfone)s for proton exchange membranes with high oxidative stability

e-Polymers ◽  
2005 ◽  
Vol 5 (1) ◽  
Author(s):  
Liping Shen ◽  
Guyu Xiao ◽  
Guoming Sun
Keyword(s):  
Oxidation Resistance ◽  
Proton Exchange Membranes ◽  
Exchange Capacity ◽  
Proton Exchange ◽  
Ion Exchange Capacity ◽  
Excellent Thermal Stability ◽  
Arylene Ether ◽  
Ether Ketone ◽  
High Oxidation Resistance ◽  
Sulfonated Poly

Abstract Sulfonated poly(arylene thioether ketone ketone sulfone)s (SPATKKS) were synthesized by nucleophilic polycondensation of various amounts of 1,3- bis(4-fluorobenzoyl)benzene, 1,3-bis(3-sodium sulfonate-4-fluorobenzoyl)benzene, and 4,4’-dichlorodiphenylsulfone with 4,4’-thiobisbenzenethiol. Sulfonated poly- (arylene ether ketone ketone sulfone)s were also prepared in order to compare their oxidation resistance to peroxides with that of SPATKKS. SPATKKS show high oxidation resistance to peroxides. The resulting ionomers with moderate ion exchange capacity present excellent thermal stability (the 5% weight loss temperature is about 500°C) and low water uptake and swelling ratio until 85°C. The materials hold promise for application as proton exchange membranes in fuel cells.

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