TY - JOUR
T1 - Bioactivity of viscoelastic ormosil-type organic-inorganic hybrids containing colloidal silica particles
AU - Aburatani, Yasushi
AU - Tsuru, Kanji
AU - Hayakawa, Satoshi
AU - Osaka, Akiyoshi
PY - 2003/5
Y1 - 2003/5
N2 - 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.
AB - 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.
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U2 - 10.2109/jcersj.111.318
DO - 10.2109/jcersj.111.318
M3 - Article
AN - SCOPUS:0038649651
SN - 0914-5400
VL - 111
SP - 318
EP - 322
JO - Journal of the Ceramic Society of Japan
JF - Journal of the Ceramic Society of Japan
IS - 1293
ER -