Synthesis Of Carbonate-Substituted Hydroxyapatite By A Mechanical Activation Method

A mechanical activation method was used to produce a carbonate-substituted hydroxyapatite powder (CHAp) using CaHPO4.2H2O and CaCO3 as starting materials. The calcium-to-phosphorous molar (Ca/P) ratio of reactants was 1.67. Milling was performed in a sealed agate vials and balls with various paramet...

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Main Author:	Tram, Nguyen Xuan Thanh
Format:	Thesis
Language:	English
Published:	2010
Subjects:	TN1-997 Mining engineering Metallurgy
Online Access:	http://eprints.usm.my/42342/1/Nguyen_Xuan_Thanh_Tram24.pdf
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id	my-usm-ep.42342
record_format	uketd_dc
spelling	my-usm-ep.423422019-04-12T05:26:50Z Synthesis Of Carbonate-Substituted Hydroxyapatite By A Mechanical Activation Method 2010-08 Tram, Nguyen Xuan Thanh TN1-997 Mining engineering. Metallurgy A mechanical activation method was used to produce a carbonate-substituted hydroxyapatite powder (CHAp) using CaHPO4.2H2O and CaCO3 as starting materials. The calcium-to-phosphorous molar (Ca/P) ratio of reactants was 1.67. Milling was performed in a sealed agate vials and balls with various parameters to optimize the process. The results showed that processing efficiency was governed by milling time, ball-to-powder weight ratio (BPR), milling speed and milling environment. The optimum parameters are as follows: milling duration of 24 hours, BPR of 10:1, milling speed of 400 rpm and dry milling. Based on these optimum parameters, subsequent milling of reactants at Ca/P ratios of 1.85 and 2.00 were also investigated to evaluate the effect of carbonate content on the properties of CHAp. Thermal behaviour of CHAp powders with different carbonate contents depicted that the substitution of carbonate ions for phosphate group enhanced the thermal stability of apatite. 2010-08 Thesis http://eprints.usm.my/42342/ http://eprints.usm.my/42342/1/Nguyen_Xuan_Thanh_Tram24.pdf application/pdf en public masters Universiti Sains Malaysia Pusat Pengajian Kejuruteraan Bahan & Sumber Mineral
institution	Universiti Sains Malaysia
collection	USM Institutional Repository
language	English
topic	TN1-997 Mining engineering Metallurgy
spellingShingle	TN1-997 Mining engineering Metallurgy Tram, Nguyen Xuan Thanh Synthesis Of Carbonate-Substituted Hydroxyapatite By A Mechanical Activation Method
description	A mechanical activation method was used to produce a carbonate-substituted hydroxyapatite powder (CHAp) using CaHPO4.2H2O and CaCO3 as starting materials. The calcium-to-phosphorous molar (Ca/P) ratio of reactants was 1.67. Milling was performed in a sealed agate vials and balls with various parameters to optimize the process. The results showed that processing efficiency was governed by milling time, ball-to-powder weight ratio (BPR), milling speed and milling environment. The optimum parameters are as follows: milling duration of 24 hours, BPR of 10:1, milling speed of 400 rpm and dry milling. Based on these optimum parameters, subsequent milling of reactants at Ca/P ratios of 1.85 and 2.00 were also investigated to evaluate the effect of carbonate content on the properties of CHAp. Thermal behaviour of CHAp powders with different carbonate contents depicted that the substitution of carbonate ions for phosphate group enhanced the thermal stability of apatite.
format	Thesis
qualification_level	Master's degree
author	Tram, Nguyen Xuan Thanh
author_facet	Tram, Nguyen Xuan Thanh
author_sort	Tram, Nguyen Xuan Thanh
title	Synthesis Of Carbonate-Substituted Hydroxyapatite By A Mechanical Activation Method
title_short	Synthesis Of Carbonate-Substituted Hydroxyapatite By A Mechanical Activation Method
title_full	Synthesis Of Carbonate-Substituted Hydroxyapatite By A Mechanical Activation Method
title_fullStr	Synthesis Of Carbonate-Substituted Hydroxyapatite By A Mechanical Activation Method
title_full_unstemmed	Synthesis Of Carbonate-Substituted Hydroxyapatite By A Mechanical Activation Method
title_sort	synthesis of carbonate-substituted hydroxyapatite by a mechanical activation method
granting_institution	Universiti Sains Malaysia
granting_department	Pusat Pengajian Kejuruteraan Bahan & Sumber Mineral
publishDate	2010
url	http://eprints.usm.my/42342/1/Nguyen_Xuan_Thanh_Tram24.pdf
_version_	1747821059220963328

Synthesis Of Carbonate-Substituted Hydroxyapatite By A Mechanical Activation Method

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