Miscible blends of a sulfonated poly(aryl ether ketone) and aromatic polyimides

1989 ◽  
Vol 27 (10) ◽  
pp. 2153-2155 ◽  
Author(s):  
Robert J. Karcha ◽  
Roger S. Porter
Keyword(s):  
Aryl Ether ◽  
Aromatic Polyimides ◽  
Miscible Blends ◽  
Aryl Ether Ketone ◽  
Ether Ketone ◽  
Sulfonated Poly

The preparation of novel sulfonated poly(aryl ether ketone sulfone)/TiO2 composite membranes with low methanol permeability for direct methanol fuel cells

2020 ◽  
pp. 095400832095804
Author(s):  
Chengyun Yuan ◽  
Yinghan Wang
Keyword(s):  
Sulfonic Acid ◽  
Direct Methanol Fuel Cells ◽  
Composite Membranes ◽  
Methanol Permeability ◽  
Aryl Ether ◽  
Direct Methanol ◽  
Aryl Ether Ketone ◽  
Ether Ketone ◽  
Sulfonic Acid Groups ◽  
Sulfonated Poly

A sulfonated poly(aryl ether ketone sulfone) (SPAEKS) with locally dense sulfonic acid groups is synthesized and different amounts of TiO2 is doped into SPAEKS matrix to prepare composite membranes (SPAEKS/TiO2-x). SEM shows that TiO2 in the composite membranes has good dispersibility when TiO2 content is not higher than 3%. The composite membranes show good mechanical properties, dimensional stability and oxidative stability. The proton conductivity of composite membranes is near to that of Nafion 117 membrane and methanol permeability of composite membranes is much lower than that of Nafion 117 membrane. Therefore, the proton selectivity of composite membranes is higher than that of Nafion 117 membrane. In particular, proton selectivity of SPAEKS/TiO2-3% (12.8 × 104 S s cm−3) is four times higher than that of Nafion 117 membrane (3.2 × 104 S s cm−3).

Aging mechanism of Sulfonated poly(aryl ether ketone) (sPAEK) in an hydroperoxide solution and in fuel cell

2010 ◽  
Vol 195 (2) ◽  
pp. 493-502 ◽  
Author(s):  
Carine Perrot ◽  
Laurent Gonon ◽  
Catherine Marestin ◽  
Arnaud Morin ◽  
Gérard Gebel
Keyword(s):  
Fuel Cell ◽  
Aryl Ether ◽  
Aging Mechanism ◽  
Aryl Ether Ketone ◽  
Ether Ketone ◽  
Sulfonated Poly
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