Effects of solvent on the properties of nano-sized hydroxyapatite powders directly prepared by high temperature flame spray pyrolysis

Jung Sang Cho, You Na Ko, Hye Young Koo, Man Jong Lee, Yun Chan Kang

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Nano-sized, spherically shape and monodispersed hydroxyapatite (HA) powders were prepared by a high temperature flame spray pyrolysis process. The powders prepared from the aqueous spray solution without ethyl alcohol had a bimodal size distribution with nanometre and submicrometre sizes. Nano-sized and monodisperse HA powders were prepared when the volume ratio (ethyl alcohol/distilled water, V/V) in the mixed solvent was 1: 2. Nano-sized HA powders were formed from the evaporated vapors by a chemical vapor deposition (CVD) process. The mean size of the HA powders measured from TEM images was 37 nm. The composition ratio of calcium and phosphorous components of the nano-sized HA powders was 1.63. The nano-sized powders obtained from the spray solution with a volume ratio of ethyl alcohol to distilled water at 1 : 2 had a phase pure hexagonal-dipyramidal structure of HA.

Original languageEnglish
Pages (from-to)628-632
Number of pages5
JournalJournal of Ceramic Processing Research
Volume10
Issue number5
Publication statusPublished - 2009 Oct 1
Externally publishedYes

Keywords

  • Chemical vapor deposition
  • Flame spray pyrolysis
  • Hydroxyapatite
  • Nano powder

ASJC Scopus subject areas

  • Ceramics and Composites

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