Replication and bioactivation of Ti-based alloy scaffold macroscopically identical to cancellous bone from polymeric template with TiNbZr powders
| Autor: | Yidie Yuan, Qunliang Song, Binglian Yong, Jihan Yang, Jing li, Tan Xiaodong, Chenglin Chu, Xue Feng, Rao Xi, Zilin Chen |
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| Rok vydání: | 2018 |
| Předmět: |
Scaffold
Materials science Compressive Strength Surface Properties Niobium Biomedical Engineering Nucleation 02 engineering and technology engineering.material 010402 general chemistry 01 natural sciences Apatite Biomaterials Coating Biomimetic Materials Elastic Modulus medicine Alloys Elastic modulus Titanium technology industry and agriculture 021001 nanoscience & nanotechnology Titanate 0104 chemical sciences Body Fluids Compressive strength medicine.anatomical_structure Chemical engineering Mechanics of Materials visual_art Cancellous Bone engineering visual_art.visual_art_medium Zirconium Powders 0210 nano-technology Cancellous bone Porosity |
| Zdroj: | Journal of the mechanical behavior of biomedical materials. 88 |
| ISSN: | 1878-0180 |
| Popis: | In the present work, a new type of porous Ti-based alloy scaffold with high porosity (about 75%) and interconnected pores in the range of 300–1000 µm was fabricated by polymeric foam replication method with TiNbZr powders. This porous scaffold, which is consisted with major β phase Ti and minor α Ti phase, exhibits a compressive strength of 14.9 MPa and an elastic modulus of 0.21 GPa, resembling the mechanical properties of nature human cancellous bone (σ = 10–50 MPa, E = 0.01–3.0 GPa). To improve its osteogenic potential, a bioactive nanostructural titanate network coating was applied to the scaffold surface using hydrothermal treatment. The bone-like apatite inducing ability of the treated scaffold was systemically assessed using SBF immersion during 3–28 days. The nanostructural titanate network coated on porous TiNbZr scaffold is favorable for apatite nucleation and subsequent growth due to the hydrolysis of titanate. The results suggest that highly porous TiNbZr scaffolds with an appropriate bioactive coating, which was fabricated in this study, could be potentially used for bone tissue engineering application. |
| Databáze: | OpenAIRE |
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