Abstract
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 language | English |
|---|---|
| Pages (from-to) | 943-946 |
| Number of pages | 4 |
| Journal | Key Engineering Materials |
| Volume | 240-242 |
| Publication status | Published - 2003 Jan 1 |
| Event | Proceedings 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 4 → 2002 Dec 8 |
Keywords
- Bioactivity
- Hybrid
- Mechanical Properties
- SBF
- Sol-Gel
ASJC Scopus subject areas
- Materials Science(all)
- Mechanics of Materials
- Mechanical Engineering