Effect of Sintering on Hydroxyapatite/Sodium Alginate Properties

Kanasan, Nanthini; Bakar, Sharifah Adzila Syed Abu; Mustaffa, Nor Azimah; Rahman, Mohd Nasrull Abdol; Hassan, Mohd Fahrul; Panerselvan, Gurubaran

doi:10.30880/ijie.2018.10.03.013

Cited by 3 publications

(2 citation statements)

References 8 publications

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“…Keywords: Bovine Bone, Hydroxyapatite, Calcination, Characterizations, XRD, FTIR, FESEM, ceramic is broadly applied as bone fillers, bone tissue scaffolds, bioactive coatings and composites owing to its excellent biocompatibility, cytocompatibility and osteoconductivity [4,5]. However, it is important to annotate that native bone HAP differs from stoichiometric HAP in a number of ways because natural HAP is non-stoichiometric and have nanosized crystal dimensions [6].…”

Section: Introductionmentioning

confidence: 99%

Fabrication and Characterization of Nanocrystalline Hydroxyapatite Extracted from Bovine Bone at Different Calcination Temperatures

Bano

Salwah

Basri

et al. 2019

IJIE

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Section: Introductionmentioning

confidence: 99%

Fabrication and Characterization of Nanocrystalline Hydroxyapatite Extracted from Bovine Bone at Different Calcination Temperatures

Bano

Salwah

Basri

et al. 2019

IJIE

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“…Hydroxyapatite (HA) (Ca10(PO4)6(OH)2) and β-tricalcium phosphate (β-TCP, whitlockite β-Ca3(PO4)2) is a calcium phosphate compounds that have been widely used in orthopedic implant due to the attractive biomaterials with excellent biocompatibility, osteoconductivity and the similarity to human hard bone tissues [1][2][13][14][15]. However, there have several limitations to be used in load bearing areas due to its characteristics which is polymer to develop bone substitutes have been improved widely and have been investigated by many researcher due to its brittle and less degradation ability.…”

Section: Introductionmentioning

confidence: 99%

FTIR and XRD Evaluation of Magnesium Doped Hydroxyapatite/Sodium Alginate Powder by Precipitation Method

Kanasan

Bakar

Rahman

et al. 2018

KEM

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Composites material were developed to acquire the desired material properties for biomedical applications in the recovery of defect bone by using Mg-doped HA/SA. Hydroxyapatite (HA) is the major constituent and essential component in bone and teeth. The stability of Mg doped HA/SA is influenced by starting precursor powders, preparation condition and method of preparing the samples for implant materials. The precipitation method was employed to prepare Mg-doped HA/SA powders by varying the composition of Mg at temperature 1300 C. The influence of Mg-doped HA/SA on phase composition, chemical structure and a functional group at various weight percentages (0.5wt%-1.5wt %) were accomplished through X-ray diffraction (XRD) and Fourier Transform Infrared Spectroscopy (FTIR) analyses. Based on the XRD and FTIR analyses, there is the presence of different peaks intensity and adsorption bands which indicates the shifted of peaks due to the doping process and a chemical interaction were observed between the inorganic and organic phase. Furthermore, the transformation of β-TCP due to increase in sintering temperatures are caused by the presence of magnesium ions. The OH stretching bands of HA/SA are trace by FTIR that identified the decomposition of Mg-doped HA/SA.

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Microstructure mechanism of the hydroxyapatite densification process

Selimin

Lee

Haq

et al. 2019

IOP Conf. Ser.: Mater. Sci. Eng.

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Hydroxyapatite (HA) is a well-known materials used as biomaterials in various applications. Numerous studied had been done for unlocking the pros and cons of this material. Sintering process has been used for extraction of pure HA that have similar Ca/P ratio to human bone mineral. This study aims to investigate the effect of sintering temperature on the properties of synthetic HA as well as to develop the mechanism of this densification process. Synthetic HA powder (Sigma-Aldrich #04238) was mixed together with binders, namely polyvinyl alcohol (PVA) and polyethene glycol (PEG) in wet mixing condition using ball mill. Pressed HA (15 g, 65 mm x 12 mm) was sintered with temperature ranging from 1000°C to 1200°C with heating rate and cooling rate of 10°C/min. It has been found that, pure HA was obtained when the HA was sintered with temperature ranging from 1000°C to 1200°C. The thermogravimetric analysis showed that there are there were two mass loss stages on the heating process from room temperature to 1250°C; 100-500°C (dehydroxylation) and 680-1080°C (decomposition). From the microstructure data, the mechanism of the densification process of HA was developed.

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Effect of Sintering on Hydroxyapatite/Sodium Alginate Properties

Cited by 3 publications

References 8 publications

Fabrication and Characterization of Nanocrystalline Hydroxyapatite Extracted from Bovine Bone at Different Calcination Temperatures

Fabrication and Characterization of Nanocrystalline Hydroxyapatite Extracted from Bovine Bone at Different Calcination Temperatures

FTIR and XRD Evaluation of Magnesium Doped Hydroxyapatite/Sodium Alginate Powder by Precipitation Method

Microstructure mechanism of the hydroxyapatite densification process

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