| 凝胶掺杂磺化聚苯醚膜性能及水分子的动态吸附 |
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| 引用本文： | 李翠华,刘剑洪,罗仲宽,管蓉,张黔玲,王芳. 凝胶掺杂磺化聚苯醚膜性能及水分子的动态吸附[J]. 稀有金属材料与工程, 2010, 0(Z2) |
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| 作者姓名： | 李翠华 刘剑洪 罗仲宽 管蓉 张黔玲 王芳 |
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| 作者单位： | 深圳大学高分子重点实验室;湖北大学; |
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| 基金项目： | 深圳大学功能高分子重点实验室基金(FP200800004);深圳大学科学研究基金(200705) |
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| 摘 要： | 将H3PO4/SiO2凝胶掺杂入磺化聚苯醚质子交换膜基质中,提高了吸水率和质子电导率。研究了水分子在凝胶掺杂型磺化聚苯醚膜中的动态吸附扩散行为,探讨了水与膜基质中磺酸和磷酸基团的相互作用及变化,研究了凝胶掺杂型磺化聚苯醚膜的质子传导过程。结果表明,复合膜的水吸附量显著增加,电导率提高,最高可超过Nafion112(0.0871S·cm-1),达到0.216S·cm-1。凝胶对提高复合膜的电导率具有重要作用,一方面,磷酸基团在磺酸基团和水分子作用下离解产生了离域的H+,增加了可移动的离子数总量;另一方面,凝胶由于强烈的亲水性可吸附水分子形成新的亲水区,并在水合离子的跃迁和传导过程中起着连接点的作用,从而形成更多更长的水分子区,促进了传导质子的离子簇和离子通道的形成,显著提高了电导率。
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| 关 键 词： | 磺化聚苯醚 质子传导 电导率 凝胶 |
Sulfonated Poly(phenylene oxide) Proton Exchange Composite Membrane Doped with Phosphosilicate Gel and its Absorption of Water |
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| Li Cuihua,Liu Jianhong,Luo Zhongkuan,Guan Rong,Zhang Qianling,Wang Fang. Sulfonated Poly(phenylene oxide) Proton Exchange Composite Membrane Doped with Phosphosilicate Gel and its Absorption of Water[J]. Rare Metal Materials and Engineering, 2010, 0(Z2) |
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| Authors: | Li Cuihua Liu Jianhong Luo Zhongkuan Guan Rong Zhang Qianling Wang Fang |
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| Affiliation: | Li Cuihua1,Liu Jianhong1,Luo Zhongkuan1,Guan Rong2,Zhang Qianling1,Wang Fang1 (1. Shenzhen University,Shenzhen 518060,China) (2. Hubei University,Wuhan 430062,China) |
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| Abstract: | Proton-conducting composite membranes were prepared by doping phosphosilicate gels into SPPO polymer matrix, which had better water uptake and conductivity, and the highest conductivity value of 0.216 S?cm-1 was achieved. It was found that hydrophilic H3PO4/SiO2 raised the retention of hydrated water and improved the channels of proton transfer, and at the same time, H3PO4/SiO2 decomposed partially H+, so increased the concentration of mobile protons. And H3PO4/SiO2 could also support the transition and tra... |
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| Keywords: | SPPO proton exchange membrane conductivity phosphosilicate gels |
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