NDLI: Mechanical characterization of dense calcium phosphate bioceramics with interconnected porosity

Content Provider	Springer Nature Link
Author	Hsu, Y. H. Turner, I. G. Miles, A. W.
Copyright Year	2007
Abstract	Porous hydroxyapatite/tricalcium phosphate (HA/TCP) bioceramics were fabricated by a novel technique of vacuum impregnation of reticulated polymeric foams with ceramic slip. The samples had approximately 5–10% interconnected porosity and controlled pore sizes appropriate to allow bone ingrowth, combined with good mechanical properties. A range of polyurethane foams with 20, 30 and 45 pores per inch (ppi) were used as templates to produce samples for testing. The foams were inpregnated with solid loadings in the range of 60–140 wt%. The results indicated that the average apparent density of the HA/TCP samples was 2.48 g/cm$^{3}$, the four-point bending strength averaged 16.98 MPa, the work of fracture averaged 15.46 J/m$^{2}$ and the average compressive strength was 105.56 MPa. A range of mechanical properties resulted from the various combinations of different grades of PU foam and the solid loading of slips. The results indicated that it is possible to manufacture open pore HA/TCP bioceramics, with compressive strengths comparable to human bone, which could be of significant clinical interest.
Starting Page	2319
Ending Page	2329
Page Count	11
File Format	PDF
ISSN	09574530
Journal	Journal of Materials Science: Materials in Medicine
Volume Number	18
Issue Number	12
e-ISSN	15734838
Language	English
Publisher	Springer US
Publisher Date	2007-06-14
Publisher Place	Boston
Access Restriction	Subscribed
Subject Keyword	Surfaces and Interfaces, Thin Films Ceramics, Glass, Composites, Natural Methods Metallic Materials Polymer Sciences Characterization and Evaluation of Materials Biomaterials
Content Type	Text
Resource Type	Article
Subject	Biomaterials Biophysics Bioengineering Biomedical Engineering

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