BIPHASIC CALCIUM PHOSPHATES OF HYDROXYAPATITE/OCTACALCIUM PHOSPHATE WITH MIXED MORPHOLOGY FOR HARD TISSUE ENGINEERING APPLICATIONS

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MOHAMMADI Z.; SHEYKH MAHDI MESGAR A.A.R.; RASOULI F.; NOORI M.

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Journal: Journal of Applied Research in Chemistry Year:2015 | Volume:9 | Issue:1 Page(s): 31-40

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Title

BIPHASIC CALCIUM PHOSPHATES OF HYDROXYAPATITE/OCTACALCIUM PHOSPHATE WITH MIXED MORPHOLOGY FOR HARD TISSUE ENGINEERING APPLICATIONS

Author(s)

MOHAMMADI Z. | SHEYKH MAHDI MESGAR A.A.R. | RASOULI F. | NOORI M. | Issue Writer Certificate

Keywords

OCTACALCIUM PHOSPHATEQ1

HYDROXYAPATITEQ1

CHITOSANQ2

COMPOSITE SCAFFOLDSQ2

HARD TISSUE ENGINEERINGQ2

Abstract

Biphasic calcium phosphates (BCPs) of HYDROXYAPATITE/OCTACALCIUM PHOSPHATE (HA/OCP) with mixed morphology of whisker/spherulite were synthesized and characterized by the precipitationhydrolysis method in an acidic solution containing calcium and phosphate ions and carbonyl diamide. The synthesized solutions were refluxed at 90 °C for 3 or 4 days. The crystalline structure of products was determined by X−ray diffraction (XRD). Fourier transformed infra-red spectroscopy (FTIR) was used to characterize the absorption spectrum. The morphology of products was evaluated by scanning electron microscopy (SEM). The results showed the presence of carbonyl diamide (CA) in synthesized solutions with a Ca/P molar ratio of 1.67 led spherulites to be formed and then whiskers such that an increase of CA concentration was associated with an increase in whisker length and a decrease in spherulite diameter. The concentration of CA was more effective than calcium concentration and Ca/P molar ratio on the size of whiskers. The increase of reaction time may give rise to change the morphology of whiskers to lath-like one (increasing the whisker width) and spherulites from flowerlike forms to microspheres. The appropriate CHITOSAN-based COMPOSITE SCAFFOLDS containing various amounts of calcium phosphate phase with a homogenous microstructure of 65−80 porosity are percent and pore size of 50-400 μm could be produced for HARD TISSUE ENGINEERING applications. The porosity of scaffolds was decreased with increasing the calcium phosphate phase.

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APA: Copy

MOHAMMADI, Z., SHEYKH MAHDI MESGAR, A.A.R., RASOULI, F., & NOORI, M.. (2015). BIPHASIC CALCIUM PHOSPHATES OF HYDROXYAPATITE/OCTACALCIUM PHOSPHATE WITH MIXED MORPHOLOGY FOR HARD TISSUE ENGINEERING APPLICATIONS. JOURNAL OF APPLIED RESEARCHES IN CHEMISTRY (JARC), 9(1), 31-40. SID. https://sid.ir/paper/180233/en

Vancouver: Copy

MOHAMMADI Z., SHEYKH MAHDI MESGAR A.A.R., RASOULI F., NOORI M.. BIPHASIC CALCIUM PHOSPHATES OF HYDROXYAPATITE/OCTACALCIUM PHOSPHATE WITH MIXED MORPHOLOGY FOR HARD TISSUE ENGINEERING APPLICATIONS. JOURNAL OF APPLIED RESEARCHES IN CHEMISTRY (JARC)[Internet]. 2015;9(1):31-40. Available from: https://sid.ir/paper/180233/en

IEEE: Copy

Z. MOHAMMADI, A.A.R. SHEYKH MAHDI MESGAR, F. RASOULI, and M. NOORI, “BIPHASIC CALCIUM PHOSPHATES OF HYDROXYAPATITE/OCTACALCIUM PHOSPHATE WITH MIXED MORPHOLOGY FOR HARD TISSUE ENGINEERING APPLICATIONS,” JOURNAL OF APPLIED RESEARCHES IN CHEMISTRY (JARC), vol. 9, no. 1, pp. 31–40, 2015, [Online]. Available: https://sid.ir/paper/180233/en

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