Abstract
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 language | English |
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Pages (from-to) | 318-322 |
Number of pages | 5 |
Journal | Journal of the Ceramic Society of Japan |
Volume | 111 |
Issue number | 1293 |
DOIs | |
Publication status | Published - May 2003 |
Keywords
- Apatite
- Bioactivity
- Compressive strength
- Organic-inorganic hybrid
- Sol-gel
- Viscoelasticity
ASJC Scopus subject areas
- Ceramics and Composites
- Chemistry(all)
- Condensed Matter Physics
- Materials Chemistry