Self-Healing Polymer Coating with efficient delivery for Alginates and Calcium Nitrite to Provide Corrosion Protection for Carbon Steel
Self-Healing Polymer Coating with efficient delivery for Alginates and Calcium Nitrite to Provide Corrosion Protection for Carbon Steel
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DOI：
10.1016/j.colsurfa.2023.130970
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发表时间：
2023-01
期刊：
影响因子：
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通讯作者：
N. Yoshimoto;I. W. Fathona;A. Yabuki
中科院分区：
文献类型：
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作者：
N. Yoshimoto;I. W. Fathona;A. Yabuki
本研究描述了一种结合海藻酸盐和多价阳离子的聚合物涂层的开发。该涂层利用1%的纤维素纳米纤维（CNF）为缓蚀剂海藻酸钠（Alg）和亚硝酸钙（CN）创造了通道。这些途径允许Alg和CN释放到受损区域进行腐蚀保护。在腐蚀溶液中监测涂层对划痕的电化学阻抗，评价聚合物涂层的自修复性能。Alg和CN层在涂层中的位置决定了涂层对损伤部位的防腐效果。结果，CN层首先扩散到受损区域，Alg层紧随其后。该组合形成了含有8% CN层和5% Alg层的CNF涂层，具有优异的自修复性能。缓蚀剂首先通过氮离子形成薄膜，然后由海藻酸盐和钙离子组成粘连良好的厚膜。
This study described the development of a polymer coating that binds alginates and multivalent cations. This coating utilized cellulose nanofibers (CNF) of 1% to create pathways for the corrosion inhibitors sodium alginate (Alg) and calcium nitrite (CN). These pathways allowed the release of Alg and CN to damaged areas for corrosion protection. Electrochemical impedance of scratches to the coatings was monitored in corrosive solutions to evaluate the self-healing properties of the polymer coatings. The positions of the Alg and CN layers in the coatings were instrumental in the effectiveness of corrosion protection to the damaged areas. As a result, the CN layer was the first to spread to the damaged area, and the Alg layer followed. The combination formed a coating of 8% CN layer and 5% Alg layer with CNF that delivered excellent self-healing properties. The corrosion inhibitors first formed a thin film via nitride ions, which was followed by a well-adhered thick film composed of alginates and calcium ions.