Modification of Calcium Hydroxyapatite using Ethyl Phosphates
スポンサーリンク
概要
- 論文の詳細を見る
Calcium hydroxyapatite (CaHAP) particles synthesized by a wet method have been modified by treating them withwater-acetone solutions of ethyl phosphates (EP). The modified CaHAP particles were characterized by various means.XRD patterns of the modified CaHAP particles showed a strong peak at d = 1.40 nm in addition to the peaks characteristic of CaHAP. With increasing EP concentration the XRD peaks of CaHAP were weakened while the newstrong peak grew rapidly. The original particles were modified by EP, with no formation of new particles. These resultsindicate that treatment with EP induces the formation of a layered structure in the surface layer of the particles. The H_2O and C_2H_5 groups present in the modified particles were removed by heating above 350°C in air, which resulted in the immediate disappearance of the XRD peaks due to the layered structure, so that only the CaHAP peaks were observed. Outgassing of the modified materials above 300°C gave mesoporous CaHAP particles.
- Royal Society of Chemistryの論文
Royal Society of Chemistry | 論文
- Reactions of excited-state benzophenone ketyl radical in a room-temperature ionic liquid
- Ultrathin tough double network hydrogels showing adjustable muscle-like isometric force generation triggered by solvent
- Motion of methanol adsorbed in porous coordination polymer with paramagnetic metal ions
- Hyperbranched 5,6-glucan as reducing sugar ball
- Stereoselective tris-glycosylation to introduce β-(1→3)-branches into gentiotetraose for the concise synthesis of phytoalexin-elicitor heptaglucoside