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Proton-conducting polymers with reduced methanol permeation

机译:减少甲醇渗透的质子传导聚合物

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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 #mu#m reduces the permeability to methanol by an order of magnitude.
机译:研究了Nafion 117以及某些类型的酸碱和共价交联共混膜对甲醇的渗透性。使用带有火焰离子化检测器的气相色谱仪,测量甲醇穿透随时间的变化。与Nafion相比,研究的酸碱和共价交联共混膜显示出明显更低的对甲醇的渗透率。另外,提出了降低甲醇渗透性的另一种方法。在这个概念中,薄的阻挡层在Nafion 117膜上进行了等离子聚合。结果表明,厚度为0.3μm的等离子聚合物层使对甲醇的渗透性降低了一个数量级。

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