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Published on: June 23, 2017
Development of biodegradable Fe-Mn thin structures by electroforming in deep eutectic solvents.
Vinicius Sales1, Carlo Paternoster1, Francesco Copes1
1Laboratory of Biomaterials and Bioengineering (LBB), CRC - I in Biomaterials and Bioengineering for Innovation in Surgery, University Hospital Research Center, Regenerative Medicine, Quebec City, G1L 3L5, Canada.
Electroforming using deep eutectic solvents offers a novel method for creating thin iron-manganese (Fe-Mn) alloy structures for biomedical implants. This approach allows for tunable properties, enhancing their potential for temporary intravascular devices.
Area of Science:
- Biomaterials Engineering
- Materials Science
- Electrochemistry
Background:
- Iron-manganese (Fe-Mn) alloys show potential for temporary biomedical implants like stents due to mechanical strength and biocompatibility.
- Conventional fabrication methods are energy-intensive and time-consuming.
Purpose of the Study:
- To explore electroforming using deep eutectic solvents (DESs) as an alternative fabrication method for thin Fe-Mn structures.
- To investigate the effect of glycine concentration on Mn co-deposition and material properties.
Main Methods:
- Electroforming of thin Fe-Mn structures using ethylene glycol-based DESs.
- Incorporation of glycine as a complexing agent at varying concentrations (0.2, 0.4, 0.6 M).
- Characterization of microstructure, composition, corrosion behavior, and cytocompatibility.
Main Results:
- Higher glycine concentrations improved manganese incorporation, crystallinity, and hardness.
- Increased glycine content led to a higher corrosion rate.
- Successfully fabricated thin (50-85 µm) Fe-Mn structures with tunable properties.
Conclusions:
- DES-based electroforming is a viable and promising route for fabricating biodegradable Fe-Mn biomedical devices.
- The study demonstrates control over Fe-Mn alloy properties through glycine concentration in DES electroforming.
- This method offers a more efficient alternative to traditional top-to-bottom fabrication approaches.
