Investigation on role of monomer(s) during electrochemical polymerization of aniline and its derivatives on low carbon steel by XPS
Investigation on role of monomer(s) during electrochemical polymerization of aniline and its derivatives on low carbon steel by XPS
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DOI：
10.1016/j.electacta.2012.06.042
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发表时间：
2012-09
影响因子：
6.6
通讯作者：
V. Shinde;P. Patil
中科院分区：
文献类型：
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作者：
V. Shinde;P. Patil
低碳钢上苯胺、邻甲氧基苯胺和邻甲苯胺涂层的电化学聚合反应是在草酸水溶液中恒电流条件下进行的。 E-t曲线显示了三个不同的阶段——低碳钢表面的溶解和多晶草酸铁界面相的形成、低碳钢表面的完全钝化和各个单体的电化学聚合。为了了解单体在电化学聚合过程中的作用，通过 X 射线光电子能谱对被动相样品进行了表征。这项研究的结果表明，单体参与电化学聚合的第一阶段，钝化时间取决于电解质中存在的单体类型。
Electrochemical polymerization of the aniline, o-anisidine and o-toluidine coatings on low carbon steel has been carried out under galvanostatic conditions in an aqueous oxalic acid solution. The E–t curves show three distinct stages – dissolution of the low carbon steel surface and formation of polycrystalline iron oxalate interphase, complete passivation of low carbon steel surface and the electrochemical polymerization of respective monomer(s). To understand the role of monomer(s) during the electrochemical polymerization process, the passive interphase samples were characterized by X-ray photoelectron spectroscopy. The results of this study show that monomer(s) are taking a part in first stage of electrochemical polymerization and passivation time depends on the type of monomer(s) present in electrolyte.