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Drug-Supported Microparticles of Calcium Carbonate Nanocrystals and Its Covering with Hydroxyapatite

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Abstract:

Drug-supported spherical microparticles with below 3 m in diameter of calcium carbonate (CC) nanocrystals were precipitated by a complex decomposition method from Na2CO3 and CaCl2 solutions with hydrocortisone phosphate (HyC). The HyC was completely incorporated into the microparticles and was adsorbed on the surface of nanocrystals. The crystal phases of vaterite and calcite were controlled by the addition of magnesium ions. Spherical microparticles of calcite cores and petal-shaped hydroxyapatite (HAp) outer layers were fabricated by soaking calcite into the SBF, or a supersaturated solution of phosphate ions to enhance the crystal growth of HAp.

Keywords: CALCITE; CALCIUM CARBONATE; DRUG DELIVERY SYSTEM; HYDROXYAPATITE; MICROPARTICLE; VATERITE

Document Type: Research Article

DOI: http://dx.doi.org/10.1166/jnn.2007.523

Publication date: March 1, 2007

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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