The piperidinium cation exhibited a substantial impact on the improvement of alkaline stability of anion exchange membranes (AEMs), yet the research regarding the micro-block polymer AEMs modified with it has not been conducted. Herein, we report two series of micro-block poly(arylene ether sulfone)s containing densely benzyl-N-methylpiperidinium (TTP-n-PIPPES) and benzyl-trimethyl-ammonium (TTP-n-QAPES) functionalized units for AMEs, respectively, where the n represents the molar ratio of monomer containing tri-tetraphenyl to the employed bisphenol monomers. The content and arrangement of the two types of cations in both polymer backbones were the same. The hydrophilic phases of TTP-n-PIPPES membranes exhibited isolated island states, wrapped with coherent hydrophobic phases. While the TTP-n-QAPES membranes formed continuous hydrophilic channels but fragmented hydrophobic phases. The discrepancy in the microscopic morphology of membranes and the intrinsic nature of cations thus rendered two types of AEMs with different advantages in macroscopic properties. The TTP-n-PIPPES membranes performed better dimensional stability and alkaline stability (low temperature). In contrast, the preferable capabilities of TTP-n-QAPES membranes were water affinity, hydroxide conductivity, and alkaline stability (high temperature). For instance, the TTP-18.2-PIPPES membrane was 11.7%, 11.4%, and 27.4% lower than the TTP-18.2-QAPES membrane at 80 °C in terms of dimensional change, water uptake, and hydroxide conductivity, respectively.

哌啶阳离子对提高阴离子交换膜 (AEMs) 的碱稳定性具有重要影响，但尚未开展关于用其改性的微嵌段聚合物 AEMs 的研究。在此，我们报告了两个系列的微嵌段聚（亚芳基醚砜），分别包含用于 AME 的致密苄基-N-甲基哌啶（ TTP- n -PIPPES）和苄基-三甲基铵（ TTP- n - QAPES）功能化单元，其中n表示含有三四苯基的单体与所用双酚单体的摩尔比。两种聚合物主链中两种阳离子的含量和排列相同。TTP- n的亲水相-PIPPES 膜表现出孤立的岛态，包裹着连贯的疏水相。虽然TTP -n- QAPES 膜形成连续的亲水通道，但疏水相支离破碎。膜的微观形态和阳离子的本征性质的差异使得两种类型的AEMs在宏观性质上具有不同的优势。TTP -n- PIPPES膜具有更好的尺寸稳定性和碱稳定性（低温）。相比之下，TTP -n的更可取的能力-QAPES 膜具有亲水性、氢氧化物电导率和碱性稳定性（高温）。例如，TTP-18.2-PIPPES 膜在 80 °C 时的尺寸变化、吸水性和氢氧化物电导率分别比 TTP-18.2-QAPES 膜低 11.7%、11.4% 和 27.4%。