A series of novel side‐chain sulfonated poly(arylene ether sulfone) (SPAES) multiblock and random copolymers were synthesized by condensation polymerization from a new disulfonated aryl sulfone monomer, 4,4′‐difluoro‐2,2′‐bis(3‐sulfobenzoyl)diphenyl sulfone disodium salt (DFBSPS). The chemical structures of DFBSPS and the SPAESs were characterized by proton nuclear magnetic resonance (¹H NMR) and Fourier transform infrared (FTIR) spectra. The SPAES membranes prepared by solution cast method exhibited high tensile strength (50–71 MPa) and high radical oxidative stability. They could keep their morphology and maintain proton conductivities after hydrolysis test in 95 °C water for 1000 h. They also showed smaller swelling ratio in in‐plane direction than in through‐plane direction and such an anisotropic effect was more significant for the multiblock copolymers than for the random ones. The multiblock copolymer membranes exhibited higher proton conductivity than the random ones with similar ion exchange capacities (IECs). Preliminary hydrogen‐oxygen fuel cell tests were performed at 60 °C and 80% relative humidity (RH). The results showed that the single cell equipped with the multibiock copolymer membrane SB3 exhibited 0.12 W cm⁻² higher maximum output power density than the one equipped with the random copolymer membrane SR3 (with the same IEC), indicating much better performance of the former. © 2019 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2019, 57, 2304–2313

中文翻译：

---

用于质子交换膜的新型侧链磺化聚亚芳基醚砜的合成及性能

通过缩聚反应，由一种新型的二磺化芳基砜单体4,4'-二氟-2,2'-双（3-）通过缩聚反应合成了一系列新型的侧链磺化聚亚芳基醚砜（SPAES）多嵌段和无规共聚物。磺基苯甲酰基）二苯砜二钠盐（DFBSPS）。DFBSPS和SPAESs的化学结构以质子核磁共振为特征（¹H NMR）和傅立叶变换红外（FTIR）光谱。通过溶液浇铸法制备的SPAES膜表现出高拉伸强度（50-71 MPa）和高自由基氧化稳定性。在95°C的水中进行1000 h水解测试后，它们可以保持其形态并保持质子电导率。它们还显示出在面内方向上的溶胀率小于在面内方向上的溶胀率，并且这种多嵌段共聚物的各向异性效应比无规共聚物更显着。与具有相似离子交换容量（IEC）的无规共聚物膜相比，该多嵌段共聚物膜表现出更高的质子传导性。氢氧燃料电池的初步测试是在60°C和80％相对湿度（RH）下进行的。结果表明，配备有多biock共聚物膜SB3的单电池表现出0.12 W cm最大输出功率密度比配备无规共聚物膜SR3（具有相同IEC）的最大输出功率密度^-2高，表明前者的性能要好得多。分级为4 +©2019 Wiley Periodicals，Inc.J.Polym。科学，A部分：Polym。化学 2019，57，2304–2313