Abstract
Silicon-substituted hydroxyapatite (Si-HAP) foam may be an ideal bone substitute since Si-HAP has stimulating effect for bone formation and the foam morphology provides interconnected macro porous structure which is ideal for bone formation. However, lower temperature was reported to be required for the fabrication of pure Si-HAP whereas higher temperature was required for the fabrication of HAP foam. In the present investigation, three calcium silicate compounds (CaSiO3, wollastonite; Ca2SiO4, belite; Ca3SiO5, alite) were evaluated for their feasibility as a silicon source for the fabrication of Si-HAP foam. Sintering temperature at 1300°C resulted in a very weak HAP foam, whereas sintering at 1400°C resulted in HAP foam with improved compressive strength up to approximately 9 kPa. XRD analysis showed the appearance of a secondary phase, α-tricalcium phosphate, when wollastonite was used as the silicon source. In contrast, pure Si-HAP phase was obtained when belite or alite was used as the silicon source. The porosities of the Si-HAP foams were approximately 95% regardless of composition of the foam. We therefore concluded that Si-HAP foam with fully interconnecting pores could be fabricated when belite or alite was used as the silicon source. Further evaluation is expected based on this initial finding.
| Original language | English |
|---|---|
| Pages (from-to) | 88-91 |
| Number of pages | 4 |
| Journal | Journal of the Ceramic Society of Japan |
| Volume | 116 |
| Issue number | 1349 |
| DOIs | |
| Publication status | Published - Jan 1 2008 |
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All Science Journal Classification (ASJC) codes
- Ceramics and Composites
- Chemistry(all)
- Condensed Matter Physics
- Materials Chemistry
Cite this
Fabrication of Si-substituted hydroxyapatite foam using calcium silicates. / Zaman, Q. H.M.Shawket; Takeuchi, Akari; Zaman, Chowdhury Tanira; Matsuya, Shigeki; Ishikawa, Kunio.
In: Journal of the Ceramic Society of Japan, Vol. 116, No. 1349, 01.01.2008, p. 88-91.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Fabrication of Si-substituted hydroxyapatite foam using calcium silicates
AU - Zaman, Q. H.M.Shawket
AU - Takeuchi, Akari
AU - Zaman, Chowdhury Tanira
AU - Matsuya, Shigeki
AU - Ishikawa, Kunio
PY - 2008/1/1
Y1 - 2008/1/1
N2 - Silicon-substituted hydroxyapatite (Si-HAP) foam may be an ideal bone substitute since Si-HAP has stimulating effect for bone formation and the foam morphology provides interconnected macro porous structure which is ideal for bone formation. However, lower temperature was reported to be required for the fabrication of pure Si-HAP whereas higher temperature was required for the fabrication of HAP foam. In the present investigation, three calcium silicate compounds (CaSiO3, wollastonite; Ca2SiO4, belite; Ca3SiO5, alite) were evaluated for their feasibility as a silicon source for the fabrication of Si-HAP foam. Sintering temperature at 1300°C resulted in a very weak HAP foam, whereas sintering at 1400°C resulted in HAP foam with improved compressive strength up to approximately 9 kPa. XRD analysis showed the appearance of a secondary phase, α-tricalcium phosphate, when wollastonite was used as the silicon source. In contrast, pure Si-HAP phase was obtained when belite or alite was used as the silicon source. The porosities of the Si-HAP foams were approximately 95% regardless of composition of the foam. We therefore concluded that Si-HAP foam with fully interconnecting pores could be fabricated when belite or alite was used as the silicon source. Further evaluation is expected based on this initial finding.
AB - Silicon-substituted hydroxyapatite (Si-HAP) foam may be an ideal bone substitute since Si-HAP has stimulating effect for bone formation and the foam morphology provides interconnected macro porous structure which is ideal for bone formation. However, lower temperature was reported to be required for the fabrication of pure Si-HAP whereas higher temperature was required for the fabrication of HAP foam. In the present investigation, three calcium silicate compounds (CaSiO3, wollastonite; Ca2SiO4, belite; Ca3SiO5, alite) were evaluated for their feasibility as a silicon source for the fabrication of Si-HAP foam. Sintering temperature at 1300°C resulted in a very weak HAP foam, whereas sintering at 1400°C resulted in HAP foam with improved compressive strength up to approximately 9 kPa. XRD analysis showed the appearance of a secondary phase, α-tricalcium phosphate, when wollastonite was used as the silicon source. In contrast, pure Si-HAP phase was obtained when belite or alite was used as the silicon source. The porosities of the Si-HAP foams were approximately 95% regardless of composition of the foam. We therefore concluded that Si-HAP foam with fully interconnecting pores could be fabricated when belite or alite was used as the silicon source. Further evaluation is expected based on this initial finding.
UR - http://www.scopus.com/inward/record.url?scp=44649110119&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=44649110119&partnerID=8YFLogxK
U2 - 10.2109/jcersj2.116.88
DO - 10.2109/jcersj2.116.88
M3 - Article
AN - SCOPUS:44649110119
VL - 116
SP - 88
EP - 91
JO - Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan
JF - Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan
SN - 1882-0743
IS - 1349
ER -