Biomimetic coating of bone-like apatite on glass beads

Akiyoshi Osaka, Shinji Takemoto, Satoshi Hayakawa, Chikara Ohtsuki

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Soda lime glass beads were chemically treated by either an aqueous solution of NaOH (3 mol/l) or a hydrogen peroxide solution (30 vol%) containing TaCL5 in 5×10-3 mol/l or by both of them. The treated samples were soaked up to 14 days in a simulated body fluid (SBF): Na+ 142.0, K+ 5.0, Ca2+ 2.5, Mg2+ 1.5, Cl- 147.8, HCO3- 4.2, HPO42- 1.0, SO42- 0.5 (in 10-3 mol/l), or in another solution 1.5 times as concentrated as SBF (1.5SBF). The SBFs were kept at 36.5°C and at 7.25 in pH. Apatite was deposited on the samples treated with the NaOH solution, the H2O2/Ta solution, and both of them before soaking in 1.5SBF. Ta(V) ions were present on not only the samples treated with the H2O2/Ta solution but those treated with both NaOH and the H2O2/Ta solutions. It was concluded that Ta(V) ions on the surface layer had ability of inducing apatite deposition, and the ability was enhanced by the coexistence with silanol groups.

Original languageEnglish
Pages (from-to)60-63
Number of pages4
JournalMaterials Science Research International
Volume4
Issue number1
Publication statusPublished - Mar 1 1998

Keywords

  • Apatite
  • Biomimetic process
  • Chemical treatment
  • Coating
  • Glass
  • Hydrogen peroxide
  • Surface microstructure
  • Tantalum chloride
  • X-ray photoelectron spectroscopy

ASJC Scopus subject areas

  • Materials Science(all)

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