| 摘要 |
[Object] To provide a proton exchange membrane for a fuel cell having excellent proton conductivity, lower property of swelling with hot water, and excellent durability, as well as a block copolymer forming the proton exchange membrane, and a composition, a molded product, a fuel cell proton exchange membrane electrode assembly, and a fuel cell. [Solving Means] (1) A block copolymer having a hydrophilic segment and a hydrophobic segment and having a structure expressed by Chemical Formula 1 below
(where X represents H or a univalent cation, Y represents sulfonyl group or carbonyl group, each of Z and Z' independently represents any of O and S atoms, W represents one or more group selected from the group consisting of direct bond between benzenes, sulfone group and carbonyl group, each of Ar 1 and Ar 2 independently represents divalent aromatic group, and each of n and m independently represents an integer from 2 to 100), and a molded product, a composition, and a proton exchange membrane, as well as a fuel cell including the proton exchange membrane. |
