Enhancing Corrosion Resistance of Magnesium Alloys with Plasma Treatment and Electrospun Biodegradable Polymer Coatings
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| Year of publication | 2025 |
| Type | Appeared in Conference without Proceedings |
| MU Faculty or unit | |
| Citation | |
| Description | Metallic implants like stainless steel and titanium are non-degradable and can cause complications, often requiring removal. Magnesium (Mg) alloys are a better alternative due to their biocompatibility and biodegradability but suffer from rapid corrosion. Electrospun biodegradable polymer coating slows degradation, improves cell adhesion and mimics the extracellular matrix for better tissue integration. Plasma treatment enhances coating adhesion by increasing surface hydrophilicity. Combining plasma-treated Mg with electrospun nanofibers significantly improves corrosion resistance and biocompatibility. A diffuse coplanar surface barrier discharge plasma was used to treat Mg substrates and PHB powder before electrospinning. Samples were characterized by SEM/EDX, ATR-FTIR, LCM, EIS, WCA, and SFE. Corrosion performance was tested by immersing coated Mg in Simulated Body Fluid (SBF) for seven days, monitoring hydrogen release and pH changes. Figure 1 shows untreated and plasma-treated bare Mg had the highest hydrogen evolution. Electrospun coatings reduced hydrogen release, confirming their barrier effect. The dual plasma-treated sample performed best, showing the lowest hydrogen evolution, controlled pH increase, and reduced corrosion, demonstrating the effectiveness of the combined treatment. |
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