Novel polyethersulfone compositions have been discovered which incorporate structural subunits derived from sulfonated bis(halophenyl)sulfones, dihydroxy terphenyls, and/or bis(hydroxyphenyl)pyridines. The sulfonated polyethersulfones show promise as materials for use in polymer electrolyte membranes (PEMs) in fuel cells owing to their high proton conductivities (0.02-0.07 S/cm at 20° C. and 100 percent humidity). In addition, a novel unsulfonated thermoplastic polyethersulfone comprising structural subunits derived from a non-sulfonated bis(halophenyl)sulfone bis4-fluorophenyl)sulfone and 4,4′-dihydroxyphenyl-2,6-pyridine (CAS No. 171820-16-9) is disclosed.
人们发现了新型聚醚砜组合物,其中包含的结构单元来自磺化双(卤苯基)砜、二羟基三
联苯和/或双(羟基苯基)
吡啶。磺化聚醚砜具有很高的质子传导性(在 20° C 和 100% 湿度条件下为 0.02-0.07 S/cm),因此有望用作燃料电池中的聚合物电解质膜(P
EM)材料。此外,还公开了一种新型非磺化热塑性聚醚砜,该聚醚砜由衍生自非磺化双(卤苯基)砜双4-
氟苯基)砜和 4,4′-二羟基苯基-2,6-
吡啶(
化学文摘社编号:
171820-16-9)的结构单元组成。