Surface observation of solvent-impregnated Nafion membrane with atomic force microscopy.
Surface observation of solvent-impregnated Nafion membrane with atomic force microscopy.
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DOI：
10.1021/la036329q
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发表时间：
2004-07
期刊：
影响因子：
--
通讯作者：
A. Affoune;A. Yamada;M. Umeda
中科院分区：
文献类型：
--
作者：
A. Affoune;A. Yamada;M. Umeda
用原子力显微镜研究了Nafion 117膜的表面形貌修饰。水和甲醇的表面形貌和结构的影响进行了研究，使用接触和轻敲原子力显微镜模式。当样品吸收水分时，Nafion的形貌会发生很大的变化。然而，储存在甲醇中的样品的特征是表面平坦。表面改性与Nafion在溶剂中溶胀过程中的膨胀现象有关。攻丝模式相图像显示，离子和簇域是可区分的浸渍在水或甲醇中的样品的表面。
Surface morphology modification of the Nafion 117 membrane has been investigated by atomic force microscopy. The effects of water and methanol on the topography and structure of the surface were studied using the contact and tapping atomic force microscopy modes. Nafion topography considerably changes when samples absorb water. However, samples stored in methanol are characterized by flat surfaces. Surface modification was linked to an expansion phenomenon during the swelling of Nafion by solvents. Tapping-mode phase images showed that ionic and cluster domains are distinguishable from the surface of samples impregnated either in water or methanol.