Synthesis and characterization of multiblock sulfonated poly(arylene ether sulfone) membranes with different hydrophilic moieties for application in polymer electrolyte membrane fuel cell

ABSTRACT Multiblock sulfonated poly(arylene ether sulfone)s were synthesized to investigate the structural effects on their membrane properties. Three different types of sulfonated hydrophilic blocks were used; their structures possessed different acidity and local concentration of sulfonic acid gro...

Full description

Saved in:
Bibliographic Details
Published in:Journal of polymer science. Part A, Polymer chemistry Polymer chemistry, 2014-10, Vol.52 (20), p.2947-2957
Main Authors: Ahn, Jinju, Lee, Hyejin, Yang, Tae-Hyun, Kim, Chang-Soo, Bae, Byungchan
Format: Article
Language:English
Subjects:
block copolymers
Electrolytes
Ethers
ionomers
Membranes
Monomers
Oligomers
Physical properties
Relative humidity
step-growth polymerization
Sulfonic acid
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:ABSTRACT Multiblock sulfonated poly(arylene ether sulfone)s were synthesized to investigate the structural effects on their membrane properties. Three different types of sulfonated hydrophilic blocks were used; their structures possessed different acidity and local concentration of sulfonic acid groups. For the comparison between the block copolymers, a hydrophobic block with the same chemical structure and block length was used. The different acidities and local concentration were achieved using different sulfonation methods, such as postsulfonation and direct condensation with sulfonated monomers, and different monomers for preparing the hydrophilic block. The higher acidity and concentration of sulfonic acid groups resulted in higher proton conductivity under certain relative humidity conditions and phase separation as shown in the transmission electron microscopy analysis. The synthesized oligomers and polymers were well characterized, and the other physical properties were also investigated. © 2014 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2014, 52, 2947–2957 Multiblock sulfonated poly(arylene ether sulfone)s were synthesized to investigate the structural effects on their membrane properties. Three different types of sulfonated hydrophilic blocks were used; their structures possessed different acidity and local concentration of sulfonic acid groups. The higher acidity and concentration of sulfonic acid groups resulted in higher proton conductivity under certain relative humidity conditions and phase.
ISSN:0887-624X
1099-0518
DOI:10.1002/pola.27330