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论文类型：期刊论文

发表时间：2016-01-05

发表刊物：JOURNAL OF APPLIED POLYMER SCIENCE

收录刊物：SCIE、EI、Scopus

卷号：133

期号：1

ISSN号：0021-8995

关键字：batteries and fuel cells; membranes; polyelectrolytes; self-assembly

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.