Carbonate- and Si-involving hydroxyapatite (C-HA, Si-HA) as well as hydroxyapatite (HAp) was prepared through wet chemical processes. Magic angle Spinning (MAS) NMR spectroscopy was applied together with Cross-Polarization (CP) techniques to study chemical environments around the guest oxo-anions. C-HA involved at least four carbonate sites, but the one for ∼168 ppm was left unassigned. In Si-HA, only Q0 (SiO44-) replaced the phosphate ion site but other Si atoms were polymerized and present on the surface or in the grain boundary of the Si-HA particles. The 31P MAS and CP-MAS spectra indicated the absence of HPO42- in the lattice, and suggested the presence of an amorphous phosphate phase on the particle surface.
|ホスト出版物のタイトル||A Global Road Map for Ceramic Materials and Technologies: Forecasting the Future of Ceramics, International Ceramic Federation - 2nd International Congress on Ceramics, ICC 2008, Final Programme|
|出版ステータス||出版済み - 2008|
|イベント||2nd International Congress on Ceramics, ICC 2008 - Verona, イタリア|
継続期間: 6 29 2008 → 7 4 2008
|その他||2nd International Congress on Ceramics, ICC 2008|
|Period||6/29/08 → 7/4/08|
All Science Journal Classification (ASJC) codes