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

Yasushi Aburatani; Kanji Tsuru; Satoshi Hayakawa; Akiyoshi Osaka

doi:10.2109/jcersj.111.318

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

Yasushi Aburatani, Kanji Tsuru, Satoshi Hayakawa, Akiyoshi Osaka

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

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
Pages (from-to)	318-322
Number of pages	5
Journal	Journal of the Ceramic Society of Japan
Volume	111
Issue number	1293
DOIs	https://doi.org/10.2109/jcersj.111.318
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

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title = "Bioactivity of viscoelastic ormosil-type organic-inorganic hybrids containing colloidal silica particles",

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.",

keywords = "Apatite, Bioactivity, Compressive strength, Organic-inorganic hybrid, Sol-gel, Viscoelasticity",

author = "Yasushi Aburatani and Kanji Tsuru and Satoshi Hayakawa and Akiyoshi Osaka",

year = "2003",

month = may,

doi = "10.2109/jcersj.111.318",

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publisher = "Ceramic Society of Japan/Nippon Seramikkusu Kyokai",

number = "1293",

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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.

KW - Apatite

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KW - Compressive strength

KW - Organic-inorganic hybrid

KW - Sol-gel

KW - Viscoelasticity

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