@article{oai:niigata-u.repo.nii.ac.jp:00003582,
 author = {Kimura, Isao and Honma, Tatsuro and Riman, Richard E.},
 issue = {12},
 journal = {日本セラミックス協会学術論文誌},
 month = {Dec},
 note = {Interfacial reaction in a multiple emulsion, was carried out with the aim of preparing hollow hydroxyapatite (HAp) microspheres. The multiple emulsion was a W/O/W emulsion, made of dipotassium hydrogen phosphate solution as an inner aqueous phase, cyclohexane as an oil phase, and calcium nitrate solution as an outer aqueous phase. The phase diagrams of Ca(NO_3)2-K_2HPO_4-H_2O system were drawn by thermodynamic computations and used to simulate the chemical process in a multiple emulsion for determining the experimental conditions. Single phase HAp was synthesized at an initial pH of 12.0. HAp with a Ca/P ratio was measured by inductively coupled plasma spectroscopy to correspond to 1.49. The product was composed of microspheres of 0.5 to 2 μm in diameter. Each microsphere was composed of acicular particles with an aspect ratio of 2.5-10 with a short axis length of about 20 nm.},
 pages = {888--893},
 title = {Preparation of Hydroxyapatite Microspheres by Interfacial Reaction in a Multiple Emulsion},
 volume = {115},
 year = {2007}
}