Surface modification and degradation performance of Ag-immobilized polydopamine-coated zinc wires
Document Type
Article
Publication Date
10-15-2026
Department
Department of Materials Science and Engineering; Department of Biomedical Engineering
Abstract
In this study, silver-containing polydopamine (PDA–Ag) coatings were successfully deposited on Zn wires via a mussel-inspired, immersion-assisted polymerization approach. Surface characterization confirmed the formation of a continuous, homogeneous, and well-adhered coating layer approximately 720 nm thick. X-ray photoelectron spectroscopy (XPS) and energy-dispersive X-ray spectroscopy (EDS) analyses further verified the uniform distribution of silver nanoparticles within the PDA matrix on the wire surface. Electrochemical investigations demonstrated that the PDA-Ag5 coating exhibited the highest corrosion resistance, as evidenced by a reduced corrosion current density and increased charge-transfer resistance. In contrast, excessive Ag incorporation adversely affected the coating's protective performance. Altogether, the results indicate that controlling Ag content plays a critical role in improving coating uniformity and enhancing the corrosion protection of biodegradable Zn wires.
Publication Title
Materials Letters
Recommended Citation
Hossain, M.,
Bakhsheshi-Rad, H.,
Ahamed, B.,
Goldman, J.,
&
Drelich, J.
(2026).
Surface modification and degradation performance of Ag-immobilized polydopamine-coated zinc wires.
Materials Letters,
421.
http://doi.org/10.1016/j.matlet.2026.141237
Retrieved from: https://digitalcommons.mtu.edu/michigantech-p2/2807