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2267128 
Journal Article 
Effects of Surfactant on Nano-hydroxyapatite Prepared by Ultrasonic Atomization Process 
Qiu Yang; Xia Haiping 
2010 
39 
324-327 
WOS:000282417900079 
At the normal temperature and pressure, nano-hydroxyapatite was synthesized by ultrasonic atomization process with Ca(NO(3))(2)center dot 4H(2)O and (NH(4))(2)HPO(4) as the calcium and the phosphorus precursors respectively. The effect of four different surfactants (citric acid, glycine, D-glucose and TX-10) on the synthesis and characteristic of hydroxyapatite (HAP) was discussed. The phase of the samples with addition of the same quantity surfactant have no significant change as shown in the XRD patterns; therefore, it is concluded that the surfactant presence or absence does not to have an effect on crystallization. Scanning electron microphotographs show that the different additives influence the size and morphology of HAP nanoparticles. The glycine has a positive effect on homogeneity promotion and separation of HAP nanoparticle, and the D-Glucose and TX-10 shows little effect on HAP morphology, whereas citric acid induced heavy degree of particle agglomeration. The effect of four different surfactants on the synthesis and characteristic of hydroxyapatite (HAP) was discussed from the basic principles of physical chemistry. 
ultrasonic atomization; surfactant; hydroxyapatite (HAP); nano-powders