Induction of bioactivity on silicone elastomer by simultaneous irradiation of oxygen cluster and monomer ion beams

M. Kawashita, R. Araki, G. H. Takaoka

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

Silicone elastomer substrates were irradiated with acceleration voltages ranging from 3 to 9 kV and doses ranging from 1 × 1014 to 2.5 × 1015 ions cm-2 by the simultaneous use of oxygen cluster and monomer (O2 CM) ion beams, and then soaking in CaCl2 solution. The apatite-forming ability of the substrates was examined using a metastable calcium phosphate solution that had 1.5 times the ion concentrations of normal simulated body fluid (1.5SBF). Silicon oxide clusters (SiOx) were formed at the silicone elastomer surfaces and the hydrophilicity of the substrates was remarkably improved by the irradiation. The irradiated silicone elastomer substrates formed apatite in 1.5SBF, whereas unirradiated ones did not. These results suggest that irradiation using O2 CM ion beams is effective for inducing an apatite-forming ability on silicone elastomer substrates.

Original languageEnglish
Pages (from-to)621-627
Number of pages7
JournalActa Biomaterialia
Volume5
Issue number2
DOIs
Publication statusPublished - 2009 Feb 1

Keywords

  • Bioactivity
  • Ion beam
  • SBF (simulated body fluid)
  • Silicone elastomer
  • Surface modification

ASJC Scopus subject areas

  • Biotechnology
  • Biomaterials
  • Biochemistry
  • Biomedical Engineering
  • Molecular Biology

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