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Rapid Mix Preparation of Bioinspired Nanoscale Hydroxyapatite for Biomedical Applications
Published on: February 23, 2017
Hydroxyapatite formation from cuttlefish bones: kinetics
H Ivankovic1, E Tkalcec, S Orlic
1Faculty of Chemical Engineering and Technology, University of Zagreb, Zagreb, Croatia. hivan@fkit.hr
Journal of Materials Science. Materials in Medicine
|June 23, 2010
Summary
Cuttlefish bones were hydrothermally transformed into highly porous hydroxyapatite (HA). This process preserved bone structure while forming novel HA nanostructures, offering potential for biomaterial applications.
Area of Science:
- Biomaterials Science
- Materials Chemistry
- Biomineralization
Background:
- Cuttlefish bones, primarily composed of aragonite, are a potential source for biomaterials.
- Hydrothermal methods offer a pathway for transforming natural materials into functional composites.
- Understanding the kinetics and microstructural evolution is crucial for optimizing HA synthesis.
Purpose of the Study:
- To synthesize highly porous hydroxyapatite (HA) from cuttlefish bones using hydrothermal treatment.
- To investigate the kinetics, mechanism, and structural evolution during the transformation process.
- To characterize the phase composition, microstructure, and morphology of the resulting HA.
Main Methods:
- Hydrothermal transformation of cuttlefish bones at temperatures from 140-220°C.
- Quantitative X-ray diffraction (XRD) with Rietveld refinement for phase analysis.
- Fourier transform infrared spectroscopy (FTIR) for chemical composition and substitution analysis.
- Scanning electron microscopy (SEM) for microstructural and morphological examination.
- Johnson-Mehl-Avrami (JMA) analysis for transformation kinetics.
Main Results:
- Successful conversion of aragonitic cuttlefish bone to hydroxyapatite (HA) within 20 minutes to 48 hours.
- Preservation of the original cuttlefish bone architecture and channel size (~80 × 300 μm).
- Formation of dandelion-like HA spheres (3-8 μm) transforming into nanoplates and nanorods (200-300 nm diameter, 8-10 μm length).
- Identification of B-type CO(3)(2-) substitutions in the HA structure via FTIR.
- Kinetics analysis indicated a diffusion-controlled, one-dimensional growth mechanism of HA.
Conclusions:
- Hydrothermal treatment is an effective method for converting cuttlefish bones into porous hydroxyapatite.
- The process preserves the macro-architecture of the bone while creating novel nanoscale HA structures.
- The resulting HA biomaterial exhibits potential for applications in bone regeneration and tissue engineering.
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