Department of Chemistry, Faculty of Sciences, University of Craiova, 107i Calea Bucuresti, 200478 Craiova, Romania.
Doctoral School of Sciences, Faculty of Sciences, University of Craiova, A.I. Cuza no.13, 200585 Craiova, Romania.
Molecules. 2020 Jan 21;25(3):439. doi: 10.3390/molecules25030439.
Poly (vinyl butyral-co-vinyl alcohol-co-vinyl acetate) named further PVBA was investigated as a protective coating for copper corrosion in 0.9% NaCl solution using electrochemical measurements such as, electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization associated with atomic force microscopy (AFM). The PVBA coating on the copper surface (Cu-PVBA) was modeled in methanol containing PVBA. Its inhibitory properties against corrosion was comparatively discussed with those of the copper sample treated in methanol without polymer (Cu-Me) and of untreated sample (standard copper). A protective performance of PVBA coating of 80% was computed from electrochemical measurements, for copper corrosion in NaCl solution. Moreover, AFM images designed a specific surface morphology of coated surface with PVBA, clearly highlighting a polymer film adsorbed on the copper surface, which presents certain deterioration after corrosion, but the metal surface was not significantly affected compared to those of untreated samples or treated in methanol, in the absence of PVBA.
聚（醋酸乙烯酯-乙烯醇-醋酸乙烯酯），进一步命名为 PVBA，作为铜在 0.9%氯化钠溶液中腐蚀的防护涂层进行了研究，使用电化学测量方法，如电化学阻抗谱（EIS）和与原子力显微镜（AFM）相关的动电位极化。在甲醇中对铜表面上的 PVBA 涂层（Cu-PVBA）进行建模。将其对腐蚀的抑制性能与在甲醇中未经聚合物处理的铜样品（Cu-Me）和未经处理的样品（标准铜）进行了比较。通过电化学测量，计算出 PVBA 涂层对铜在氯化钠溶液中腐蚀的保护性能为 80%。此外，AFM 图像设计了具有 PVBA 的涂层表面的特定表面形貌，清楚地突出了吸附在铜表面上的聚合物膜，该聚合物膜在腐蚀后出现一定程度的劣化，但与未经处理的样品或在不存在 PVBA 的甲醇中处理的样品相比，金属表面的腐蚀程度没有明显变化。
