A new sulfonated poly (aryl ether ketone sulfone) consisting of rigid fluorene groups (SPAEKS) is synthesized from 3, 3′-disulfonate-4, 4′-dichlorodiphenylsulfone, and 9, 9-bis (4-hydroxyphenyl) fluorene by a typical condensation polymerization. The chemical structure of SPAEKS is characterized by 1 H-NMR and FTIR spectra. SPAEKS-x membranes have moderate water absorption, swelling rate, good oxidative stability, and excellent thermal stability. The proton conductivity of SPAEKS-x membranes is in the range of 38.5–66.5 mS/cm. In particular, the proton conductivity of SPAEKS-50 membrane is 66.5 mS/cm, which is slightly higher than Nafion117 membrane (63.5 mS/cm) measured under the same conditions. All membranes show much lower methanol permeability and much higher proton selectivity than Nafion 117 membrane. Especially, proton selectivity of SPAEKS-40 membrane (13.8 × 10 4 S s cm −3 ) is about 4 times higher than that of Nafion 117 membrane (3.6 × 10 4 S s cm −3 ).

中文翻译：

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用于 DMFC 应用的含有刚性芴基的新型磺化聚（芳醚酮砜）的合成和表征

由 3, 3'-disulfonate-4, 4'-dichlorodiphenylsulfone 和 9, 9-bis (4-hydroxyphenyl) 芴合成了一种由刚性芴基团 (SPAEKS) 组成的新型磺化聚（芳醚酮砜）。缩聚。SPAEKS 的化学结构通过 1 H-NMR 和 FTIR 光谱表征。SPAEKS-x 膜具有中等吸水率、溶胀率、良好的氧化稳定性和优异的热稳定性。SPAEKS-x 膜的质子电导率在 38.5–66.5 mS/cm 范围内。特别是SPAEKS-50膜的质子传导率为66.5 mS/cm，略高于同等条件下测得的Nafion117膜（63.5 mS/cm）。所有膜都显示出比 Nafion 117 膜低得多的甲醇渗透率和高得多的质子选择性。尤其，