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	碱处理PVDF膜对制备高电导率质子交换膜的作用
	沈娟 ; 邱新平 ; 李勇 ; 朱文涛 ; 陈立泉 ; SHEN Juan ; QIU Xin-Ping ; LI Yong ; ZHU Wen-Tao ; CHEN li-Quan
	2010-06-10 ; 2010-06-10
关键词	聚偏氟乙烯 碱处理 自由基 接枝 电导率 PVDF alkaline treatment free radical graft conductivity TM911.4
其他题名	Effect of Alkaline Treatment of PVDF Membranes on Preparation of Proton Exchange Membranes with High Conductivity
中文摘要	燃料电池是一种高能量密度、低污染的新型能源.质子交换膜是燃料电池的核心组件之一.在对聚偏氟乙烯(PVDF)膜进行了碱处理改性的基础上制备了高电导率的聚偏氟乙烯接枝聚苯乙烯磺酸(PVDF-g-PSSA)质子交换膜,对碱处理后的PVDF膜进行了傅立叶变换红外光谱(FTIR)、傅立叶变换拉曼光谱(FT-Raman)及电子自旋共振(ESR)分析.振动光谱显示在处理后的膜中存在共轭碳碳双键.首次用ESR检测到碱处理后的PVDF膜中形成了自由基,其浓度在1016spin/g.研究表明碱处理引起的膜结构变化有利于接枝反应的进行,对提高所合成的质子交换膜的电导率有重要作用,电导率提高一个数量级,至6.40×10-2S/cm.; Fuel Cell is a new type of power source with high power density and little pollution. Proton ex- change membrane is a key component of the fuel cell. Poly(vinylidene fluoride) grafted polystyrene sul- fonated acid (PVDF-g-PSSA), a kind of proton exchange membrane, with high proton conductivity has been prepared by solution grafting on alkaline treated poly(vinylidene fluoride) membrane. PVDF membranes treated with alkaline solutions were studied by FTIR, FT-Raman spectroscopy and electron spin resonance (ESR). The vibrational spectra showed the existence of conjugated C=C bonds in the treated membranes. Free radicals were observed in the membranes from the ESR spectra, the concentrations of which were in the 1016 spin/g order of magnitude. The structure modification of the alkaline treated PVDF membrane could improve the grafting on the membrane and played an important role in increasing the conductivity of PVDF-g-PSSA membrane to a high value of 6.40�-2 S/cm.; 国家重点基础研究和发展(No.2002CB211803)资助项目
语种	中文 ; 中文
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/60858]
专题	清华大学
推荐引用方式 GB/T 7714	沈娟,邱新平,李勇,等. 碱处理PVDF膜对制备高电导率质子交换膜的作用[J],2010, 2010.
APA	沈娟.,邱新平.,李勇.,朱文涛.,陈立泉.,...&CHEN li-Quan.(2010).碱处理PVDF膜对制备高电导率质子交换膜的作用..
MLA	沈娟,et al."碱处理PVDF膜对制备高电导率质子交换膜的作用".(2010).

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