Particle Size Control in Sol-Gel Synthesis of Nano Hydroxyapatite

Abstract:

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Sol-gel method is one of the most potential techniques for mass-production of nano hydroxyapatite. In this paper, particle size control techniques, including dripping speed control, addition of several dispersants such as ammonium citrate, castor oil and silane coupling agent, as well as usage of insoluble and water soluble starch additives, were investigated. The particle size and microstructures of as synthesized hydroxyapatite were studied by X-ray diffraction, Scanning electron microscopy and dynamic light scattering. The results indicated that all the control techniques had considerable effects on decreasing the crystallite size, and the starch additives also exhibited obvious effect on preventing the agglomeration of nano crystallites during the synthesizing process.

Info:

Periodical:

Advanced Materials Research (Volumes 11-12)

Main Theme:

Edited by:

Masayuki Nogami, Riguang Jin, Toshihiro Kasuga and Wantai Yang

Pages:

231-234

DOI:

10.4028/www.scientific.net/AMR.11-12.231

Citation:

L. Yang et al., "Particle Size Control in Sol-Gel Synthesis of Nano Hydroxyapatite", Advanced Materials Research, Vols. 11-12, pp. 231-234, 2006

Online since:

February 2006

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Price:

$35.00

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