Proton-conducting polymers with reduced methanol permeation
Proton-conducting polymers with reduced methanol permeation
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DOI：
10.1002/(sici)1097-4628(19991003)74:1
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发表时间：
1999-10
影响因子：
3
通讯作者：
M. Walker;K. Baumgärtner;M. Kaiser;J. Kerres;A. Ullrich;E. Räuchle
中科院分区：
文献类型：
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作者：
M. Walker;K. Baumgärtner;M. Kaiser;J. Kerres;A. Ullrich;E. Räuchle
研究了Nafion® 117和某些类型的酸碱和共价交联共混膜对甲醇的渗透性。使用具有火焰离子化检测器的气相色谱仪测量甲醇渗透作为时间的函数。与Nafion相比，所研究的酸碱和共价交联的共混膜显示出对甲醇的显著较低的渗透速率。此外，提出了另一种降低甲醇渗透率的方法。在此概念中，在Nafion 117膜上等离子体聚合薄阻挡层。结果表明，厚度为0.3 μm的等离子体聚合物层使甲醇渗透率降低一个数量级。
The permeability of Nafion® 117 and some types of acid-base and covalently crosslinked blend membranes to methanol was investigated. The methanol crossover was measured as a function of time using a gas chromatograph with a flame ionization detector. In comparison to Nafion, the investigated acid-base and covalently crosslinked blend membranes show a significant lower permeation rate to methanol. Additionally, another method to reduce the methanol permeability is presented. In this concept a thin barrier layer is plasma polymerized on Nafion 117 membranes. It is shown that a plasma polymer layer with a thickness of 0.3 μm reduces the permeability to methanol by an order of magnitude.