Synthesis of High Hardness Hydroxyapatite Particles using Surfactant Assisted Hydrothermal Method
Abdel-Aal, E., Abdel-Ghafar, H., El-Sayed, D., Ewais, E. (2022). Synthesis of High Hardness Hydroxyapatite Particles using Surfactant Assisted Hydrothermal Method. EKB Journal Management System, 2(1), 35-50. doi: 10.21608/ijmti.2022.115060.1044
E. A. Abdel-Aal; H. M. Abdel-Ghafar; D. El-Sayed; E. M. Ewais. "Synthesis of High Hardness Hydroxyapatite Particles using Surfactant Assisted Hydrothermal Method". EKB Journal Management System, 2, 1, 2022, 35-50. doi: 10.21608/ijmti.2022.115060.1044
Abdel-Aal, E., Abdel-Ghafar, H., El-Sayed, D., Ewais, E. (2022). 'Synthesis of High Hardness Hydroxyapatite Particles using Surfactant Assisted Hydrothermal Method', EKB Journal Management System, 2(1), pp. 35-50. doi: 10.21608/ijmti.2022.115060.1044
Abdel-Aal, E., Abdel-Ghafar, H., El-Sayed, D., Ewais, E. Synthesis of High Hardness Hydroxyapatite Particles using Surfactant Assisted Hydrothermal Method. EKB Journal Management System, 2022; 2(1): 35-50. doi: 10.21608/ijmti.2022.115060.1044

Synthesis of High Hardness Hydroxyapatite Particles using Surfactant Assisted Hydrothermal Method

International Journal of Materials Technology and Innovation
Article 7, Volume 2, Issue 1, April 2022, Page 35-50  XML PDF (1.28 MB)
Document Type: Original Article
DOI: 10.21608/ijmti.2022.115060.1044
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Authors
E. A. Abdel-Aal email orcid ; H. M. Abdel-Ghafar; D. El-Sayed; E. M. Ewais
Central Metallurgical Research and Development Institute (CMRDI), P.O. Box 87 Helwan, Cairo, Egypt
Abstract
Hydroxyapatite (HA) crystals were synthesized from calcium acetate monohydrate and phosphoric acid using hydrothermal method. The various interactions of reactant concentrations (1 – 3 Molar), surfactant {aminotris (methylene phosphonic acid) [N(CH2PO3H2)3] (ATMP)} concentrations (0 - 100 ppm), and hydrothermal times (6 – 24 hours) were investigated and their effects on the mean diameter of the HA crystals were obtained using the Box-Behnken experimental statistical design. Results have shown that surfactant has no effect on the mean diameter of the crystals. On the other hand, the results revealed that time and reactant concentration are major parameters in changing the particle size of hydroxyapatite crystals. Without addition of the surfactant, well elongated crystals with high degree of crystallinity were synthesized. With addition of the surfactant, the agglomeration of HA particles as well as hardness of HA pressed discs are significantly increased. HA particles were ranged from 2.7 µm to 7.2 µm as crystal aggregates whereas the obtained crystallite sizes ranged from 17.3 nm to 30.3 nm.

Highlights
  • The paper involves new findings on the synthesis of high hardness hydroxyapatite.
  • 15 synthesis tests via experimental statistical design were performed with a discussion of the results.
  •  Investigations of hydroxyapatite with and without the ATNP surfactant are reported.
  •  The hydroxyapatite hardness is increased with the addition of surfactant.
Keywords
Biomaterials; Chemical synthesis; Crystallization; Hardness
Full Text

Graphical Abstract

References
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