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A new approach to prepare well-dispersed CaF2 nanoparticles by spray drying technique

Published

Author(s)

Limin Sun, Laurence C. Chow, John E. Bonevich, James W. Mitchell

Abstract

Previously, a nano-sized calcium fluoride (CaF2) was prepared using a spray drying method by simultaneously feeding Ca(OH)2 and NH4F solutions to a two-liquid nozzle. The aim of the present study was to prepare better-dispersed nano CaF2 particles by co-forming a soluble salt, sodium chloride (NaCl). NaCl of various concentrations were added to the NH4F solution, leading to formation of (CaF2+NaCl) composites with CaF2/NaCl molar ratios of 4/1, 4/4, and 4/16. Pure nano CaF2 was also prepared as the control. Powder X-ray diffraction analysis showed that the products contained crystalline CaF2 and NaCl. Scanning electron microscopy examinations showed that both the CaF2/NaCl composite and pure CaF2 particles were about (50-800) nm in size and consisted of primary CaF2 particles of
Citation
Journal of Biomedical Materials Research Part B-Applied Biomaterials
Volume
98B
Issue
2

Keywords

Calcium fluoride, nanoparticle, composite particle, spray drying, particle dispersion/agglomeration

Citation

Sun, L. , Chow, L. , Bonevich, J. and Mitchell, J. (2011), A new approach to prepare well-dispersed CaF2 nanoparticles by spray drying technique, Journal of Biomedical Materials Research Part B-Applied Biomaterials, [online], https://doi.org/10.1002/jbm.b.31800 (Accessed July 6, 2022)
Created August 5, 2011, Updated November 10, 2018