Mechanical properties of bioactive PDMS-CaO-SiO2-TiO2 and PTMO-CaO-TiO2 hybrids soaked in a simulated body fluid

Noboru Miyata, Masanobu Kamitakahara, Masakazu Kawashita, Tadashi Kokubo, Takashi Nakamura

Research output: Contribution to journalConference articlepeer-review

3 Citations (Scopus)


Polydimethylsiloxane (PDMS)-modified CaO-SiO2-TiO2 and poly(tetramethylene oxide) (PTMO)-modified CaO-TiO2 hybrids were synthesized by acid-catalyzed sol-gel processing. These hybrids were soaked in a simulated body fluid (SBF) for 4 weeks. The mechanical properties of the hybrids before and after soaking in SBF were measured by three-point bend test in air. It was found that soaking in SBF brought about a significant decrease in strength and strain at failure for the PDMS-CaO-SiO2-TiO2 hybrids with high CaO or high TiO2 contents and for the PTMO-CaO-TiO2 hybrid with a high CaO content. It may be concluded that the incorporation of a large amount of CaO into both the PDMS-modified and PTMO-modified hybrids results in certain degree of mechanical degradation under physiological environment.

Original languageEnglish
Pages (from-to)943-946
Number of pages4
JournalKey Engineering Materials
Publication statusPublished - 2003 Jan 1
EventProceedings of the 15th International Symposium on Ceramics in Medicine; The Annual Meeting of the International Society for Ceramics in Medicine - Sydney, NSW, Australia
Duration: 2002 Dec 42002 Dec 8


  • Bioactivity
  • Hybrid
  • Mechanical Properties
  • SBF
  • Sol-Gel

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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