Polyaniline (PANi) films can be electrosynthesized by oxidation of aniline on iron and mild steel in a one-step process from an aqueous oxalic acid medium which passivates substrates. Homogeneous and strongly adherent films of controlled thickness can be deposited either in the potentiodynamic or galvanostatic modes. These films are characterized by IR, X-ray photoelectron spectroscopy (XPS), gel permeation chromatography (GPC) and matrix-assisted UV-laser desorption ionization (MALDI) techniques, and have a structure similar to that of PANi deposited on platinum. Iron samples coated with PANi exhibit much better protection against corrosion in an acidic solution (0.4 M NaCl + 0.1 M HCl) than the polypyrrole-coated ones. Attempts to grow PANi films on zinc or zinc-nickel alloy in oxalic acid were unsuccessful because the formation of insulating layers prevents electropolymerization. (C) 1998 Elsevier Science S.A. All rights reserved. [References: 45]
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机译：聚苯胺（PANi）薄膜可以通过一步法从钝化基材的草酸水溶液中在铁和低碳钢上氧化苯胺来进行电合成。可以以恒动力或恒电流模式沉积厚度受控的均质且牢固粘附的薄膜。这些膜的特征在于红外，X射线光电子能谱（XPS），凝胶渗透色谱（GPC）和基质辅助的紫外激光解吸电离（MALDI）技术，其结构类似于沉积在铂上的PANi的结构。与聚吡咯涂层的样品相比，涂有PANi的铁样品在酸性溶液（0.4 M NaCl + 0.1 M HCl）中具有更好的抗腐蚀性能。尝试在草酸中在锌或锌镍合金上生长PANi膜的尝试失败，因为绝缘层的形成会阻止电聚合。 （C）1998 Elsevier Science S.A.保留所有权利。 [参考：45]
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