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Synthesis of Graphene-Hydroxyapatite Nanocomposites for Potential Use in Bone Tissue Engineering
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Nanocomposite Bone Scaffolds Based on Magnesium Alloy: A Detailed Investigation of Their In-Vitro Biodegradation
Adithya Garimella1, Firoz Alam Faroque2, Subrata Bandhu Ghosh3
1Department of Mechanical and Industrial Engineering, Manipal Institute of Technology Bengaluru, Manipal Academy of Higher Education, Manipal, 576104, Karnataka, India, manipal.edu.
International Journal of Biomaterials
|February 11, 2026
Summary
Engineered magnesium-alloy nanocomposite scaffolds with nano-fluorcanasite enhance bone regeneration. These bioactive, biodegradable implants offer tunable degradation for orthopaedic applications.
Area of Science:
- Biomaterials Science
- Orthopaedic Engineering
- Materials Science
Background:
- Polymeric biomaterials have limitations in load-bearing orthopaedic applications due to inadequate mechanical performance.
- Metallic biomaterials offer superior strength, with magnesium (Mg) being ideal for temporary implants due to bone-like properties and biodegradability.
Purpose of the Study:
- To engineer a bioactive magnesium-alloy-based nanocomposite scaffold that overcomes conventional biomaterial limitations.
- To replicate the porous microarchitecture of human bone for enhanced implant functionality.
- To incorporate nano-fluorcanasite (n-FC) for improved osteogenic activity and bone regeneration.
Main Methods:
- Fabrication of nanocomposite scaffolds using a powder metallurgy route followed by sintering.
- Incorporation of carbamide particles to create tailored, interconnected porosity.
- Evaluation of in vitro degradation behavior in phosphate-buffered saline (PBS) using a weight-change method.
Main Results:
- The developed nanocomposite scaffolds exhibit precisely regulated degradation rates compared to unalloyed magnesium.
- The incorporation of nano-fluorcanasite (n-FC) enhances osteogenic activity.
- The porous structure facilitates nutrient diffusion and waste removal, crucial for tissue regeneration.
Conclusions:
- The engineered magnesium-alloy nanocomposite scaffolds demonstrate potential as mechanically competent, bioactive, and biodegradable orthopaedic implants.
- Tunable degradation kinetics offer a significant advantage for load-bearing applications.
- The combination of a magnesium alloy, n-FC, and controlled porosity shows promise for accelerating bone tissue regeneration.
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