| SPEEK/PES-C、SPEEK/SPES-C共混质子交换膜研究 |
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| 引用本文： | 高启君,王宇新,许莉,卫国强,王志涛.SPEEK/PES-C、SPEEK/SPES-C共混质子交换膜研究[J].高分子学报,2009(1). |
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| 作者姓名： | 高启君 王宇新 许莉 卫国强 王志涛 |
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| 作者单位： | 1. 化工学院化学工程联合国家重点实验室,天津,300072
2. 化工学院 |
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| 基金项目： | 国家重点基础研究发展规划(973计划)，国家自然科学基金 |
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| 摘 要： | 通过在磺化聚醚醚酮(SPEEK,DS=61.68%)中分别混入酚酞型聚醚砜(PES-C)、磺化酚酞型聚醚砜(SPES-C,DS=53.7%)制备出SPEEK/PES-C、SPEEK/SPES-C共混质子交换膜.结果表明,共混的两种聚合物之间均具有较好的相容性.PES-C、SPES-C的混入能有效降低膜的溶胀及甲醇透过,且随着共混量的增加,这种作用越趋明显.纯SPEEK膜在75℃左右溶解,而SPEEK/PES-C(30 wt%)、SPEEK/SPES-C(30 wt%)共混膜在80℃时溶胀度仅为22.5%、26.32%.在室温至80℃范围内,纯SPEEK及共混膜的甲醇透过系数都在10-7 cm2·s-1数量级上,远小于NationR]115膜.在饱和湿度下,温度大于90℃时,SPEEK/PES-C(20 wt%)共混膜电导率超过NationR]115膜;温度大于110℃时,SPEEK/SPES-C(30 wt%)共混膜电导率与NafionR]115膜相当,达到0.11 S·cm-1.高电导率,低透醇系数以及明显提高了的可使用温度表明该类共混膜有望在DMFC中使用.
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| 关 键 词： | 磺化聚醚醚酮 酚酞型聚醚砜 磺化酚酞型聚醚砜 共混膜 直接甲醇燃料电池 |
STUDIES ON SPEEK/PES-C AND SPEEK/SPES-C BLEND PROTON-EXCHANGE MEMBRANES |
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| GAO Qi-jun,WANG Yu-xin,XU Li,WEI Guo-qiang,WANG Zhi-tao.STUDIES ON SPEEK/PES-C AND SPEEK/SPES-C BLEND PROTON-EXCHANGE MEMBRANES[J].Acta Polymerica Sinica,2009(1). |
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| Authors: | GAO Qi-jun WANG Yu-xin XU Li WEI Guo-qiang WANG Zhi-tao |
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| Institution: | 1 School of Chemical Engineering and Technology;2 State Key Laboratory of Chemical Engineering;Tianjing University;Tianjin 300072 |
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| Abstract: | Sulfonated poly(ether ether ketone)(SPEEK)is a very promising alternative membrane material for direct methanol fuel cells(DMFC).The demand of high proton conductivity calls for the membranes to have a high degree of sulfonation(DS)and work at elevated temperatures.However,with a fairly high DS,SPEEK membrane can swell excessively and even dissolve at high temperatures.To deal with this contradictory situation,phenolphthalein poly(ether sulfone)(PES-C)and sulfonated phenolphthalein poly(ether sulfone)(SPES-... |
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