2006
DOI: 10.1016/j.polymer.2006.03.003
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Synthesis and characterization of controlled molecular weight disulfonated poly(arylene ether sulfone) copolymers and their applications to proton exchange membranes

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Cited by 100 publications
(60 citation statements)
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“…This trend is rational in that higher molecular weight polymers are more entangled, or at least have more interactions within the network of polymer molecules, and therefore would restrict swelling to a greater extent as compared to their lower molecular weight analogues. This reasoning seems to hold true for even hydrophilic, sulphonated blocks and indicates that molecular weight effects are critical in the water uptake characteristics of ion-containing membranes [16]. The temperature also influenced the uptake dynamics in both Nafion and sPS-PVDF-sPS.…”
Section: Resultsmentioning
confidence: 85%
“…This trend is rational in that higher molecular weight polymers are more entangled, or at least have more interactions within the network of polymer molecules, and therefore would restrict swelling to a greater extent as compared to their lower molecular weight analogues. This reasoning seems to hold true for even hydrophilic, sulphonated blocks and indicates that molecular weight effects are critical in the water uptake characteristics of ion-containing membranes [16]. The temperature also influenced the uptake dynamics in both Nafion and sPS-PVDF-sPS.…”
Section: Resultsmentioning
confidence: 85%
“…They found that the mechanical properties such as modulus, strength and elongation of the PAEs were improved by increasing the molecular weight while the molecular weights have no obvious influence on proton conductivity [72]. Like Nafion, the proton conduction of the sulfonated PAE-type polymers depends on the level of water in the membranes, since water is needed as the mobile phase to facilitate proton conductivity.…”
Section: Thermal and Oxidative Stability And Mechanical Propertiesmentioning
confidence: 99%
“…Among others, polymer electrolyte membranes carrying sulfonic acid groups on their aromatic backbone demonstrate excellent thermal stability. [6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21] It has been suggested that proton conductivity of the sulfonated polymers and acidity of the sulfonic group are strongly related. [22] One approach in this direction is to insert perfluorinated methylene spacer between sulfonic and benzene ring.…”
Section: Introductionmentioning
confidence: 99%