Bioactivity of viscoelastic ormosil-type organic-inorganic hybrids containing colloidal silica particles

Yasushi Aburatani, Kanji Tsuru, Satoshi Hayakawa, Akiyoshi Osaka

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


Synthesized were organically modified silicate (ORMOSILs) hybrids containing colloidal silica as an ingredient, starting from poly (dimethylsiloxane) (PDMS), tetraethoxysilane (TEOS) and calcium nitrate through sol-gel processing. The effects of pre-hydrolysis of TEOS on mechanical strength and viscoelasticity were examined. A sample of composition PDMS/TEOS = 0.60 (molar ratio) with pre-hydrolysis of TEOS showed about 65% maximum failure strain. Thus obtained hybrid exhibited a peak at around -75°C in the storage modulus-temperature curve of the hybrid, due to transverse movements of the PDMS chains. This hybrid, heated at 200°C deposited apatite within 1 d in the simulated body fluid of the Kokubo recipe.

Original languageEnglish
Pages (from-to)318-322
Number of pages5
JournalJournal of the Ceramic Society of Japan
Issue number1293
Publication statusPublished - May 2003


  • Apatite
  • Bioactivity
  • Compressive strength
  • Organic-inorganic hybrid
  • Sol-gel
  • Viscoelasticity

ASJC Scopus subject areas

  • Ceramics and Composites
  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry


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