The effect of different sintering temperature to the properties of cow bone hydroxyapatite

Hydroxyapatite (HA) has been proved to be very compatible with the surrounding tissue of vertebrates since its chemical compositions similar to human bone and teeth. Natural HA has potential to be used as implant material. Main source of natural HA used are cow bones. Extraction of HA from cow bo...

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Main Author:	Shahrizal, Md Hussein
Format:	Thesis
Language:	English
Subjects:	Hydroxyapatite Sintering Cow Bone HA (CBHA) Sintering temperature
Online Access:	http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/31914/1/Page%201-24.pdf http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/31914/2/Full%20text.pdf
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spelling	my-unimap-319142014-02-13T13:03:55Z The effect of different sintering temperature to the properties of cow bone hydroxyapatite Shahrizal, Md Hussein Hydroxyapatite (HA) has been proved to be very compatible with the surrounding tissue of vertebrates since its chemical compositions similar to human bone and teeth. Natural HA has potential to be used as implant material. Main source of natural HA used are cow bones. Extraction of HA from cow bone is biologically safe and economic. In this study, effect of different sintering temperature to the properties of cow bone HA (CBHA) was carried out in two parts. First part is about characterization of raw materials. Temperature 800°C is chosen as calcination temperature. Fine CBHA is successfully produced via calcinations and milling process. From the result, particle sizedistribution for fine CBHA is 10.324μm. The phase obtained from XRD analysis is HA.Elemental analysis by XRF detects phosphorus (P) and calcium (Ca) with the Ca/P ratioof 1.67. Functional groups examined by FTIR detect hydroxyl (OH-), carbonate (CO3 2-) and phosphate (PO43-). SEM shows non uniform distribution of particle. In the secondpart, effects of different sintering temperature (1150°C, 1200°C, 1250°C, and 1300°C) to the properties of CBHA were studied. The XRD results for CBHA correspond with standard HA for all temperature. Sintering temperature is inversely proportional with XRD peaks intensities. Shrinkage analysis shows that the higher percentage of shrinkage value is 47.65 % recorded at 1300°C. Whereas, density and porosity testing show that the lowest percentage of porosity value is 4.52 % at 1300 °C and density reaches maximum value of 2.52 g/cm3 for specimen at 1250 °C and remains constant at 1300 °C. Mechanical properties observation through MOR testing shows that the highest value (35.14N/mm2) obtained at 1300°C. SEM analysis on the specimen sintered at 1300 °C shows uniform grain size at the range 2 – 4 μm, with minimum amount of pore. As a conclusion the sintering temperature affect the physical, microstructure, phase and mechanical properties of CBHA. Universiti Malaysia Perlis (UniMAP) 2012 Thesis en http://dspace.unimap.edu.my:80/dspace/handle/123456789/31914 http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/31914/1/Page%201-24.pdf 80ae016619e9f47ce326a0a9255a94fc http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/31914/2/Full%20text.pdf dd2bd80635d7d5dc72d190122d68e91c http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/31914/3/license.txt 8a4605be74aa9ea9d79846c1fba20a33 Hydroxyapatite Sintering Cow Bone HA (CBHA) Sintering temperature School of Materials Engineering
institution	Universiti Malaysia Perlis
collection	UniMAP Institutional Repository
language	English
topic	Hydroxyapatite Sintering Cow Bone HA (CBHA) Sintering temperature
spellingShingle	Hydroxyapatite Sintering Cow Bone HA (CBHA) Sintering temperature Shahrizal, Md Hussein The effect of different sintering temperature to the properties of cow bone hydroxyapatite
description	Hydroxyapatite (HA) has been proved to be very compatible with the surrounding tissue of vertebrates since its chemical compositions similar to human bone and teeth. Natural HA has potential to be used as implant material. Main source of natural HA used are cow bones. Extraction of HA from cow bone is biologically safe and economic. In this study, effect of different sintering temperature to the properties of cow bone HA (CBHA) was carried out in two parts. First part is about characterization of raw materials. Temperature 800°C is chosen as calcination temperature. Fine CBHA is successfully produced via calcinations and milling process. From the result, particle sizedistribution for fine CBHA is 10.324μm. The phase obtained from XRD analysis is HA.Elemental analysis by XRF detects phosphorus (P) and calcium (Ca) with the Ca/P ratioof 1.67. Functional groups examined by FTIR detect hydroxyl (OH-), carbonate (CO3 2-) and phosphate (PO43-). SEM shows non uniform distribution of particle. In the secondpart, effects of different sintering temperature (1150°C, 1200°C, 1250°C, and 1300°C) to the properties of CBHA were studied. The XRD results for CBHA correspond with standard HA for all temperature. Sintering temperature is inversely proportional with XRD peaks intensities. Shrinkage analysis shows that the higher percentage of shrinkage value is 47.65 % recorded at 1300°C. Whereas, density and porosity testing show that the lowest percentage of porosity value is 4.52 % at 1300 °C and density reaches maximum value of 2.52 g/cm3 for specimen at 1250 °C and remains constant at 1300 °C. Mechanical properties observation through MOR testing shows that the highest value (35.14N/mm2) obtained at 1300°C. SEM analysis on the specimen sintered at 1300 °C shows uniform grain size at the range 2 – 4 μm, with minimum amount of pore. As a conclusion the sintering temperature affect the physical, microstructure, phase and mechanical properties of CBHA.
format	Thesis
author	Shahrizal, Md Hussein
author_facet	Shahrizal, Md Hussein
author_sort	Shahrizal, Md Hussein
title	The effect of different sintering temperature to the properties of cow bone hydroxyapatite
title_short	The effect of different sintering temperature to the properties of cow bone hydroxyapatite
title_full	The effect of different sintering temperature to the properties of cow bone hydroxyapatite
title_fullStr	The effect of different sintering temperature to the properties of cow bone hydroxyapatite
title_full_unstemmed	The effect of different sintering temperature to the properties of cow bone hydroxyapatite
title_sort	effect of different sintering temperature to the properties of cow bone hydroxyapatite
granting_institution	Universiti Malaysia Perlis (UniMAP)
granting_department	School of Materials Engineering
url	http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/31914/1/Page%201-24.pdf http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/31914/2/Full%20text.pdf
_version_	1747836794153467904

The effect of different sintering temperature to the properties of cow bone hydroxyapatite

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