Crosslinked poly (2,6-dimethyl-1,4-phenylene oxide) polyelectrolyte enhanced with poly (styrene-b-(ethylene-co-butylene)-b-styrene) for anion exchange membrane applications
Crosslinked poly (2,6-dimethyl-1,4-phenylene oxide) polyelectrolyte enhanced with poly (styrene-b-(ethylene-co-butylene)-b-styrene) for anion exchange membrane applications
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用于阴离子交换膜应用的聚（苯乙烯-b-（乙烯-丁烯）-b-苯乙烯）增强的交联聚（2,6-二甲基-1,4-苯醚）聚电解质
DOI：
10.1016/j.memsci.2018.07.039
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发表时间：
2018-10
影响因子：
9.5
通讯作者：
Zhu Hong
中科院分区：
文献类型：
--
作者：
Wang Zhihua;Li Ziming;Chen Nanjun;Lu Chuanrui;Wang Fanghui;Zhu Hong
聚（苯乙烯-B-（乙烯-丁烯共聚物）-B-苯乙烯）（SEBS）由于其高的化学稳定性和灵活的机械性能而在阴离子交换膜（AEM）中显示出巨大的潜力，但离子电导率和凝胶化问题之间的权衡极大地阻碍了其进一步的应用。为了解决这一难题，我们提出了一种有效的策略，以提高综合性能的AEM之间的SEBS和聚（2，6-二甲基-1，4-苯醚）（PPO）的交联结构。接枝多个阳离子作为侧链确保了氢氧化物的高效传输。加入SEBS后，交联膜（T3 PPO-c-SEBS）的溶胀行为得到抑制，力学性能稳定，化学稳定性和尺寸稳定性得到提高。设计了明显的亲水/疏水微相分离形态，形成有效的离子通道传输氢氧化物。具有30重量%SEBS含量的T3 PP 0-c-30% SEBS膜表现出相对高的氢氧化物电导率（在30 °C下为24. OmS/cm）但低溶胀比（在30 °C下为15.6%）。此外，在长时间碱性测试（1 M NaOH，80 °C，500小时）和抗氧化测试（芬顿溶液，室温，150小时）之后，T3 PPO-c-30%SEBS膜显示出比原始T3 PPO膜好得多的碱性稳定性（57.8%保留率对24.5%）和氧化稳定性（92.0%保留率对85.8%）。因此，T3 PPO-c-SEBS可以被视为AEM应用的有希望的候选者。
Poly (styrene‑b‑(ethylene-co-butylene)‑b‑styrene) (SEBS) shows great potential in anion exchange membranes (AEMs) due to its high chemical stability and flexible mechanical properties, but the trade-off between the ion conductivity and gelation issues greatly impedes further applications. To address this dilemma, we present an effective strategy to enhance comprehensive properties of AEMs by fabricating a crosslinking structure between SEBS and poly (2,6-dimethyl-1,4-phenylene oxide) (PPO). Grafting multiple cations as the side chains ensures the highly efficiently transport of hydroxide. With the addition of SEBS, the crosslinked membranes (T3PPO-c-SEBS) show enhanced physical and chemical properties, such as restrained swelling behavior, firm mechanical properties, great chemical and dimensional stabilities. Obvious hydrophilic/hydrophobic microphase separation morphology is designed to form effective ionic channels for transmitting hydroxide. The T3PPO-c-30%SEBS membrane with 30 wt% content of SEBS exhibits relatively high hydroxide conductivity (24.0 mS/cm at 30 °C) but low swelling ratios (15.6% at 30 °C). Moreover, after the long-time alkaline test (1 M NaOH, 80 °C, 500 h) and antioxidative test (Fenton solution, room temperature, 150 h), the T3PPO-c-30%SEBS membrane shows much better alkaline stability (57.8% retention vs. 24.5%) and oxidative stability (92.0% retention vs. 85.8%) than the pristine T3PPO membrane does. Therefore, T3PPO-c-SEBS can be regarded as promising candidates for AEM applications.
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影响因子：
5.5
作者：
P. S. Tucker;J. W. Barlow;D. R. Paul
通讯作者：
P. S. Tucker;J. W. Barlow;D. R. Paul
影响因子：
15
作者：
Li, Nanwen;Leng, Yongjun;Wang, Chao-Yang
通讯作者：
Wang, Chao-Yang
影响因子：
8.4
作者：
Marino, M. G.;Kreuer, K. D.
通讯作者：
Kreuer, K. D.
用于阴离子交换膜燃料电池应用的具有多孔夹层结构的高性能层状双氢氧化物/聚(2,6-二甲基-1,4-苯醚)膜
影响因子：
9.5
作者：
Chen, Nanjun;Long, Chuan;Zhu, Hong
通讯作者：
Zhu, Hong
基于多功能层状双氢氧化物的三层策略实现燃料电池应用的高性能氢氧化物交换膜
影响因子：
9.5
作者：
Chen, Nanjun;Long, Chuan;Yu, Jinghua
通讯作者：
Yu, Jinghua