This paper is focused on the structure-properties relationship of synthesized sulfonated poly(aryl sulfone)s comprised of a bulky aliphatic-aromatic structure. Nucleophilic aromatic substitution together with a coupling step was used to prepare random copolymers with excellent film-forming ability. High thermal, mechanical, and dimensional stability of membranes ascribed to the presence of rigid aromatic sections. The oxidative stability of the optimized membrane with a 50% degree of sulfonation (Z-50) was studied in ex-situ and in-situ accelerated degradation tests. The results were evaluated by Fenton test, scanning electron microscope, nuclear magnetic resonance spectrometry, and open-circuit voltage test. The voltage decay of 0.62 mV/h was attained during 100 h open-circuit voltage test at 80 °C under 100% relative humidity. Temperature and relative humidity-dependent impedance and high-frequency resistance of membranes revealed the structural benefit of membranes. Polarization and performance curves of the optimized sample were collected at three temperatures of 80, 100, and 120 °C under 100% relative humidity. The examination of the membrane polarization under 30–100% relative humidity at the temperature of 80 °C showed a current density of about 732.7 mA/cm² even at 30% relative humidity. The design of such bulky aliphatic-aromatic poly(aryl sulfone) was responsible for this result.

本文重点研究了由庞大的脂族-芳族结构组成的合成磺化聚（芳基砜）的结构-性能关系。亲核性芳族取代与偶联步骤一起用于制备具有优异成膜能力的无规共聚物。膜的高热，机械和尺寸稳定性归因于刚性芳族部分的存在。在异位和原位加速降解试验中研究了具有50％磺化度（Z-50）的优化膜的氧化稳定性。结果通过芬顿试验，扫描电子显微镜，核磁共振光谱法和开路电压试验进行评估。在80°C和100％相对湿度下进行100小时开路电压测试期间，电压衰减为0.62 mV / h。膜的温度和相对湿度相关阻抗和高频电阻揭示了膜的结构优势。在100％相对湿度下，分别在80、100和120°C的三个温度下收集优化样品的极化和性能曲线。在80°C的温度下，在30–100％相对湿度下检查膜极化，显示电流密度约为732.7 mA / cm²即使在30％相对湿度下也是如此。这种庞大的脂族-芳族聚（芳基砜）的设计是造成这一结果的原因。