Synthesis of hydroxyapatite through dry mechanomical method and its conversion to dense bodies: preliminary result

Hydroxyapatite (HA) powder has been prepared through mechanochemical synthesis from a dry powder mixture of calcium hydroxide Ca(OH)2 and di-ammonium hydrogen phosphate (NH4)2HPO4. Three different rotation speeds of 170 rpm (M1), 270 rpm (M2) and 370 rpm (M3) were used in this method. The as synthes...

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Main Author:	Iis, Sopyan
Format:	Article
Language:	English
Published:	Springerlink 2011
Subjects:	T Technology (General)
Online Access:	http://irep.iium.edu.my/21856/ http://irep.iium.edu.my/21856/4/synthesis_of_hydroxyapatite.pdf

id	iium-21856
recordtype	eprints
spelling	iium-218562012-03-06T14:15:40Z http://irep.iium.edu.my/21856/ Synthesis of hydroxyapatite through dry mechanomical method and its conversion to dense bodies: preliminary result Iis, Sopyan T Technology (General) Hydroxyapatite (HA) powder has been prepared through mechanochemical synthesis from a dry powder mixture of calcium hydroxide Ca(OH)2 and di-ammonium hydrogen phosphate (NH4)2HPO4. Three different rotation speeds of 170 rpm (M1), 270 rpm (M2) and 370 rpm (M3) were used in this method. The as synthesized powder analyzed by FTIR and XRD confirmed the formation of HA structure with nano crystallite size in all milling speeds. XRD results showed the wide broad peaks of HA powders narrowed and crystallinity increased (31.0-42.5%) when the milling speed was accelerated to 370 rpm. The powders were compacted using cold isostatic pressing at 200 MPa and then subjected to 1150oC, 1250oC and 1350oC sintering. The sintered compacts were mechanically tested by Vickers microhardness indentation method. Powder synthesized at 370 rpm was found to have a significant hardness, 5.3 GPa obtained after 1250oC sintering. Springerlink 2011 Article PeerReviewed application/pdf en http://irep.iium.edu.my/21856/4/synthesis_of_hydroxyapatite.pdf Iis, Sopyan (2011) Synthesis of hydroxyapatite through dry mechanomical method and its conversion to dense bodies: preliminary result. IFMBE proceedings, 35. pp. 97-101. ISSN 16800737
repository_type	Digital Repository
institution_category	Local University
institution	International Islamic University Malaysia
building	IIUM Repository
collection	Online Access
language	English
topic	T Technology (General)
spellingShingle	T Technology (General) Iis, Sopyan Synthesis of hydroxyapatite through dry mechanomical method and its conversion to dense bodies: preliminary result
description	Hydroxyapatite (HA) powder has been prepared through mechanochemical synthesis from a dry powder mixture of calcium hydroxide Ca(OH)2 and di-ammonium hydrogen phosphate (NH4)2HPO4. Three different rotation speeds of 170 rpm (M1), 270 rpm (M2) and 370 rpm (M3) were used in this method. The as synthesized powder analyzed by FTIR and XRD confirmed the formation of HA structure with nano crystallite size in all milling speeds. XRD results showed the wide broad peaks of HA powders narrowed and crystallinity increased (31.0-42.5%) when the milling speed was accelerated to 370 rpm. The powders were compacted using cold isostatic pressing at 200 MPa and then subjected to 1150oC, 1250oC and 1350oC sintering. The sintered compacts were mechanically tested by Vickers microhardness indentation method. Powder synthesized at 370 rpm was found to have a significant hardness, 5.3 GPa obtained after 1250oC sintering.
format	Article
author	Iis, Sopyan
author_facet	Iis, Sopyan
author_sort	Iis, Sopyan
title	Synthesis of hydroxyapatite through dry mechanomical method and its conversion to dense bodies: preliminary result
title_short	Synthesis of hydroxyapatite through dry mechanomical method and its conversion to dense bodies: preliminary result
title_full	Synthesis of hydroxyapatite through dry mechanomical method and its conversion to dense bodies: preliminary result
title_fullStr	Synthesis of hydroxyapatite through dry mechanomical method and its conversion to dense bodies: preliminary result
title_full_unstemmed	Synthesis of hydroxyapatite through dry mechanomical method and its conversion to dense bodies: preliminary result
title_sort	synthesis of hydroxyapatite through dry mechanomical method and its conversion to dense bodies: preliminary result
publisher	Springerlink
publishDate	2011
url	http://irep.iium.edu.my/21856/ http://irep.iium.edu.my/21856/4/synthesis_of_hydroxyapatite.pdf
first_indexed	2023-09-18T20:33:21Z
last_indexed	2023-09-18T20:33:21Z
_version_	1777408882698616832

Synthesis of hydroxyapatite through dry mechanomical method and its conversion to dense bodies: preliminary result

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