Surface structure and apatite-forming ability of silicone rubber substrates irradiated by cluster ion beams

Masakazu Kawashita, Rei Araki, Gikan H. Takaoka

研究成果: Article査読

抄録

Silicone rubber substrates were irradiated at an acceleration voltage of 7 kV and a dose of 1×1015 ions/cm2 by the simultaneous use of oxygen cluster and monomer ion beams, and then soaked in CaCl 2 solution. Apatite-forming ability of the substrates was examined using a metastable calcium phosphate solution that had 1.5 times the ion concentrations of a normal simulated body fluid (1.5SBF). After the irradiation, the silicon oxide clusters (SiOx) were formed at the silicone rubber surface. The hydrophilicity of the substrates was remarkably improved by the irradiation. The irradiated silicone rubber substrates formed apatite in 1.5SBF, whereas unirradiated ones did not form it. These results suggest that the functional groups such as Si-OH and/or COOH groups induced apatite nucleation in 1.5SBF.

本文言語English
ページ(範囲)551-554
ページ数4
ジャーナルKey Engineering Materials
361-363 I
出版ステータスPublished - 2008 1月 1

ASJC Scopus subject areas

  • 材料科学(全般)
  • 材料力学
  • 機械工学

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