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首页> 外文期刊>Journal of Applied Polymer Science >Modification of SPPESK proton exchange membranes through layer-by-layer self-assembly
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Modification of SPPESK proton exchange membranes through layer-by-layer self-assembly

机译：通过逐层自组装修饰SPPESK质子交换膜

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摘要

Sulfonated poly(phthalazinone ether sulfone ketone) (SPPESK) composite membranes are fabricated through electrostatic layer-by-layer (LbL) self-assembly method with chitosan (CS) and phosphotungstic acid (PWA) to enhance the proton conductivity and stability. The results demonstrate that LbL self-assembly has different effects on the SPPESK membrane substrates with different sulfonation degrees (DSs). It elevates proton conductivity of the SPPESK membrane of lower DS and enhances swelling stability of the SPPESK membrane of higher DS. For instance, at 80 degrees C, proton conductivity of the SPPESK0.74/(CS/PWA)(1) membrane (lower DS) increases by 16%-96.49 mScm(-1), and swelling ratio of the SPPESK1.01/(CS/PWA)(3) membrane (higher DS) decreases from 58 to 29%. Attribute to the electrostatic interaction and ion cross-linking networks, permeability of the SPPESK0.74/(CS/PWA)(3) membrane and the SPPESK1.01/(CS/PWA)(5) membrane are reduced by 45 and 30%, respectively. The results indicate that the LbL self-assembly has broadened the available DS range for fuel cell applications. (c) 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 132, 42867.
机译：采用壳聚糖（CS）和磷钨酸（PWA）通过静电层（LbL）自组装法制备了磺化聚酞菁醚砜酮（SPPESK）复合膜，以提高质子的电导率和稳定性。结果表明，LbL自组装对具有不同磺化度（DSs）的SPPESK膜基质具有不同的影响。它提高了较低DS的SPPESK膜的质子传导性，并增强了较高DS的SPPESK膜的溶胀稳定性。例如，在80摄氏度下，SPPESK0.74 /（CS / PWA）（1）膜（较低的DS）的质子电导率增加16％-96.49 mScm（-​​1），而SPPESK1.01 / （CS / PWA）（3）膜（更高的DS）从58％降至29％。归因于静电相互作用和离子交联网络，SPPESK0.74 /（CS / PWA）（3）膜和SPPESK1.01 /（CS / PWA）（5）膜的渗透率分别降低了45％和30％ ， 分别。结果表明，LbL自组装扩展了燃料电池应用的可用DS范围。 （c）2015 Wiley Periodicals，Inc. J. Appl。 Polym。科学2016，132，42867。

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