The effects of excess calcium on the handling and mechanical properties of hydrothermal derived calcium phosphate bone cement

N. N. Razali, M. A. Sukardi, I. Sopyan, M. Mel, H. M. Salleh, M. M. Rahman

Research output: Contribution to journalConference article

Abstract

The objective of this study is to determine the effects of excess calcium on the handling and mechanical properties of hydrothermal derived calcium phosphate cement (CPC) for bone filling applications. Hydroxyapatite powder was synthesized via hydrothermal method using calcium oxide, CaO and ammonium dihydrogen phosphate, NH4H2PO4 as the calcium and phosphorus precursors respectively. The effects of calcium excess were evaluated by varying the CaO content at 0, 5 and 15 mole %. The precursors were then refluxed in distilled water at 90-100°C and dried overnight until the calcium phosphate powder was formed. CPC was then produced by mixing the synthesized powder with distilled water at the powder-to-liquid (P/L) ratio of 1.5. The result from the morphological properties of CPC shows the increase in agglomeration and particles size with 5 mole % of calcium excess but decreased with 15 mole % of calcium excess in CPC. This result was in agreement with the compressive strength result where the CPC increased its strength with 5 mole % of calcium excess but reduced with 15 mole % of calcium excess. The excess in calcium precursor also significantly improved the setting time but reduced the injectability of CPC.

Original languageEnglish
Article number012053
JournalIOP Conference Series: Materials Science and Engineering
Volume290
Issue number1
DOIs
Publication statusPublished - 30 Jan 2018
EventInternational Conference on Advances in Manufacturing and Materials Engineering 2017, ICAMME 2017 - Kuala Lumpur, Malaysia
Duration: 08 Aug 201709 Aug 2017

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All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Engineering(all)

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