Journal
MATERIALS CHEMISTRY AND PHYSICS
Volume 183, Issue -, Pages 220-229Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.matchemphys.2016.08.021
Keywords
Microemulsion; Hydroxyapatite; Spherical nano particle
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Funding
- National Basic Research Program of China (973 Program) [2012CB933600]
- 111 Project [B14018]
- National Natural Science Foundation of China [31271010, 31330028, 31470924]
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Spherical nanosized hydroxyapatite (HA) was successfully synthesized via a water-in-oil microemulsion route at room temperature in short time. The effect of water-to-oil and water-to-surfactant ratios on the stability of microemulsion system was investigated to establish a stable reaction system, with span-80, cyclohexane and Ca(NO3)(2)center dot 4H(2)O((NH4)(2)HPO4) solution as surfactant, oil phase, and water phase, respectively. Size and morphology change of obtained HA under optimal microemulsion system were further studied under various reaction time and temperature, and a possible growth mechanism was proposed. A moderate reaction temperature of 25 degrees C and reaction time of 5 h facilitated the formation of spherical HA particles in the dimension of 70 nm with good uniformity and regularity, which served as a great candidate in biomedical applications. (C) 2016 Elsevier B.V. All rights reserved.
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