| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Porous Materials for Biomedical Applications
|
| Presentation Title |
Polymers Covering Open ZnMg Structures for Controlled Corrosion in Absorbable Implants |
| Author(s) |
Matteo Caranchini, Valeria Vistoso, Mitja Petrič, Primoz Mrvar, Stephane Mery, Lydie PLOUX, Tiphaine SCHOTT, Karine Mougin, Françoise LIAUTAUD, Heinz Palkowski, Adele Carradò |
| On-Site Speaker (Planned) |
Adele Carradò |
| Abstract Scope |
Adaptable corrosion rates are crucial for the timely dissolution of absorbable ZnMg alloy implants. Combining ZnMg with polylactic-acid-PLA or polymethyl-methacrylate-PMMA polymers can effectively control its corrosion.
Two open structures are being discussed. The first structure is created by drilling holes in a bulk alloy, while the second structure is made using leaching technology. After this, a chemical treatment is used to bond the polymer to both the exterior and interior surfaces of the metal. In the first structure, PMMA is grafted through surface-induced polymerization, while in the second, PLA is infiltrated by bulk polymerization.
Biocompatibility assessments were conducted to evaluate infection risks for both PLA and Zn-Mg alloys. Electrochemical methods were used to assess corrosion susceptibility. The corrosion rate of Zn-Mg alloys is affected by multiple parameters, such as the composition and pH of the biological medium, the presence of oxygen, applied electrochemical parameters, and immersion time. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Thin Films and Interfaces, Biomaterials, Characterization |