Bioactive coating on titanium using calcium-containing methylsiloxane

Yasuto Hoshikawa, Eiichi Yasuda, Takamasa Onoki, Masaru Akao, Yasuhiro Tanabe

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

A bioactive coating of Ca-containing methylsiloxane on a titanium surface was investigated. The coatings have double-layered structure consisted of underlying methylsiloxane (MS) and with an incorporated Ca content methylsiloxane (MS-Ca) top layer. The top layer of MS-Ca was prepared from methyltriethoxysilane containing 2.5 mol% pentaethoxyniobium and 2.5 mol% pentaethoxytantalum followed by the addition of calcium nitrate tetrahydrate with the Ca/Si molar ratio of 0.05 to 0.5 to enhance the formation of bone-like apatite (BLA) in a simulated body fluid (SBF). The adhesive strength of the coating with a 0.05 Ca/Si ratio was 3.5 MPa, while the adhesive strength of the coating tended to decrease to 2 MPa with the increasing Ca content. The adhesive strength of the coating was related to the porosity, which depended on the Ca content.

Original languageEnglish
Pages (from-to)52-58
Number of pages7
JournalSurface and Coatings Technology
Volume203
Issue number1-2
DOIs
Publication statusPublished - 2008 Nov 25
Externally publishedYes

Keywords

  • Adhesive strength
  • Bioactive coating
  • Bone-like apatite
  • Methylsiloxane
  • Methyltriethoxysilane
  • Sol-gel method

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

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