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Hydrogen bond cross-linked sulfonated poly(imino ether ether ketone) (PIEEK) for fuel cell membranes  
Hydrogen bond cross-linked sulfonated poly(imino ether ether ketone) (PIEEK) for fuel cell membranes
资料类型: PDF文件
关键词: Fuel  cell  membranes  Poly(imino  ether  ether  ketone)  
资料大小: 1714k
所属学科: 高分子物理
来源: 来源网络
简介:
A new diamine monomer, 3,30-dihydroxydiphenylamine, is prepared by the palladium catalyzed CeN coupling reaction and the following reduction reaction of 3-bromoanisole and m-anisidine. A series of novel hydrogen bond cross-linked sulfonated poly(imino ether ether ketone) (SPIEEK) are obtained by the copolymerization of sodium 5,50-carbonylbis(2-fluorobenzene sulfonate), 4,40-difluorobenzophenone with 3,30-dihydroxydiphenylamine. The structures of resulting polymers are characterized by means of FT-IR, 1H NMR spectroscopy, and elemental analysis; the results show an agreement with the proposed structure. The resulting SPIEEK membranes display much better resistance to swelling than these without imino groups due to the strong interchain interaction through imino and sulfonic acid groups. The SPIEEK-60 and SPIEEK-80 membrane show the proton conductivity of 0.118 and 0.154 S cm1 at 80 C which is higher than Nafion 117 (0.082 S cm1 at 80 C). Moreover, the SPIEEK membranes exhibit good mechanical properties and lower methanol permeability due to the hydrogen bondings between the polymer chains.
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上传时间: 2017-2-8 13:57:03
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