On January 25, 2020, Sung, Seounghwa; T. S., Mayadevi; Chae, Ji Eon; Kim, Hyoung-Juhn; Kim, Tae-Hyun published an article.Reference of 4,4′-Sulfonylbis(chlorobenzene) The title of the article was Effect of increasing hydrophilic-hydrophobic block length in quaternary ammonium-functionalized poly(ether sulfone) block copolymer for anion exchange membrane fuel cells. And the article contained the following:
Quaternary ammonium-functionalized poly(ether sulfone) (QA-PES) block copolymers with different block chain lengths were prepared as anion exchange membranes. Copolymers with similar hydrophilic/hydrophobic block ratios and hence similar IEC values, but with various oligomer block chain lengths were synthesized to investigate, for the first time, how the length of each oligomer included in the block copolymers affected the chemophys. and elec. properties of the obtained QA-PES anion exchange membranes. The copolymer with the optimal hydrophilic:hydrophobic block chain length (QA-PES-16-30) showed good phase separation This led to the optimal formation of ionic clusters, and the highest ion conductivity of 81.01 mS cm-1 at 80°C, as well as excellent physicochem. stability even after alk. treatment in 1 M NaOH at 60°C for 500 h, due to strengthening of the hydrophobic regions, strongly suggesting that the block chain length of each of the hydrophilic and hydrophobic blocks can affect the physicochem. properties of the polymer membranes. The H2/O2 single cell performance using the QA-PES-16-30 membrane showed a maximum power d. of 260 mW cm-2, much higher than that obtained from the Tokuyama A201. The experimental process involved the reaction of 4,4′-Sulfonylbis(chlorobenzene)(cas: 80-07-9).Reference of 4,4′-Sulfonylbis(chlorobenzene)
The Article related to ammonium polyethersulfone block copolymer anion exchange membrane fuel cell, Electrochemical, Radiational, and Thermal Energy Technology: Energy-Conversion Devices and Their Components and other aspects.Reference of 4,4′-Sulfonylbis(chlorobenzene)
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