腐蚀
涂层
儿茶酚
铜
X射线光电子能谱
接触角
材料科学
化学工程
多胺
金属
粘附
核化学
胶粘剂
表面改性
热稳定性
基质(水族馆)
电化学
化学
冶金
复合材料
有机化学
电极
地质学
工程类
物理化学
海洋学
生物化学
图层(电子)
作者
Junjie Wu,Chao Cai,Zhou Zhou,Hui Qian,Fanglin Zha,Jing Guo,Bing Feng,Tao He,Ning Zhao,Jian Xu
标识
DOI:10.1016/j.jcis.2015.10.056
摘要
A low-cost mussel inspired approach was developed to produce anti-corrosion coating on copper substrate. Catechol (CA) and polyamine (PA) were spontaneously polymerized to form adhesive coating of poly(cetechol/polyamine) (P(CA/PA)) onto copper surface and then P(CA/PA) was grafted by 1-dodecanethiol. The SEM, contact angle, XPS, FTIR and TG results demonstrated the formation of uniform, compact and thermal stable coatings through multiple interactions and chemically grafting. Electrochemical tests indicated of Cu-P(CA/PA)-SH possessed a highest corrosion potential of -81mV, a lowest corrosion current density of 0.15μA/cm(2), and a highest coating resistance of 57.19kΩcm(2), and also exhibit great long-term stability whether in solution immersion or salt spray tests. The remarkable anti-corrosion capability of Cu-P(CA/PA)-SH could be ascribed to the synergistic effect of the hydrophobicity, good stability, and strong wet adhesion of the mussel-inspired coating. This study provides an effective and cheap way for material protection and may give inspiration in the fields of material, biology and medicine relating to surface and interface engineering.
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