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Journal Article
Compressive Strength and Biomineralisation Improvement by Water Glass Coating on Porous Calcium Phosphate Scaffolds
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- Authors
- Indu Bajpai, Soyoung Yang, Sujung Lee, Inn-Kyu Kang, Jun Hee Lee, Sukyoung Kim
- Issue Date
- 2016-02
- Citation
- Advances in Applied Ceramics, v.115, no.4, pp.243-248
- ISSN
- 1743-6753
- Publisher
- Maney Publishing
- Language
- English
- Type
- Journal Article
- Abstract
- Calcium phosphate (Ca-P) based scaffolds were found to be a favourable alternative for orthopaedic applications because of their similar chemical composition to natural bone. In this study, porous triphasic Ca-P scaffolds containing macropores (&200 mm) interconnected with micropores (&20 mm) were fabricated using an extrusion method. The hydroxyapatite/tricalcium phosphate ratio of the porous scaffolds was varied using different ratios of starting materials while keeping the Ca/P ratio fixed (1.5). A water glass coating on the porous Ca-P scaffolds increased the compressive strength by 45% without significantly decreasing the porosity of the H100D50 scaffold. The maximum compressive strength, ,15 MPa, was achieved on the H100D50 scaffold. The ability for apatite formation in simulated body fluid was amplified by the water glass coating on the sintered Ca-P scaffolds. Therefore, a water glass coating can be used to enhance the mechanical properties as well as the biomineralisation of the porous ceramic scaffolds.
- KSP Keywords
- 200 mm, Apatite formation, Ca/P ratio, Compressive Strength, Extrusion method, Glass coating, Mechanical properties(PMCs), Orthopaedic applications, Porous ceramic, Porous scaffolds, Water glass