Results 141 to 150 of about 1,931 (184)

Osteoblast response to zirconia modified-ORMOSILs

Materials Science and Engineering: C, 2020
In this study, an in vitro evaluation of the human osteoblasts response to Organically Modified Silicate (ORMOSIL) biomaterials was conducted. These materials were synthetized by sol-gel process being modified with zirconia (ZrO2) and/or Ca2+. The materials were immersed into phosphate buffer solution (PBS) in order to test precipitation of mimetic ...
Hugo Iván, Arrieta-Oliva, Ricardo Iván, Gutiérrez-Ventura, Daniela Anahí, Sánchez-Téllez, Lucía, Téllez-Jurado, Blanca Estela, García-Pérez   +4 more
openaire   +2 more sources

Rubbery Ormosils

MRS Proceedings, 1990
ABSTRACTA new technique which permits the successful preparation of ORMOSILS (Organically Modified Silicates) with rubbery elasticity has been developed. Common alkoxides were reacted with polydimethyl siloxane (PDMS) and the microstructures were carefully controlled. Large monoliths of the porous rubbery ORMOSILS have been prepared.
Young J. Chung, Su-Jen Ting, John D. Mackenzie   +2 more
openaire   +1 more source

Surface modified ormosil nanoparticles

Journal of Colloid and Interface Science, 2004
Organically modified silanes (ORMOSIL) such as vinyl triethoxysilane readily aggregate in the aqueous cores of reverse micelles where the triethoxysilane moieties are hydrolyzed to form a hydrated silica network and the vinyl groups protruded out from the surface of the nanoparticles toward the hydrophobic side of the micellar interface.
Rakesh Kumar, Sharma, Shraboni, Das, Amarnath, Maitra   +2 more
openaire   +2 more sources

Ormosils of High Hardness

MRS Proceedings, 1994
ABSTRACTOrganically modified silicates (ormosils) of high hardness were prepared by the reactions of tetraethoxysilane (TEOS) and polydimethylsiloxane (PDMS) aided by ultrasonic irradiation. The mechanisms leading to the hard ormosil formation were investigated by liquid state 29Si
Takashi Iwamoto, John D. Mackenzie
openaire   +1 more source

Hardness Equation for Ormosils

Journal of Sol-Gel Science and Technology, 2000
Hardness of ormosils coating on various kinds of substrates is important, and by considering recent progresses in understanding the hardness of ionic crystals or covalent crystals, new hardness equations for calculating the hardness of glasses or ormosils from chemical compositions were derived.
Akio Makishima, J.D. Mackenzie
openaire   +1 more source

Mechanical properties of ormosils

Journal of Sol-Gel Science and Technology, 1996
Many organically modified silicates (ormosils) can be prepared by the sol-gel method with very different mechanical properties by varying the ratio of polydimethylsiloxane (PDMS) to tetraethoxysilane (TEOS) contents and processing conditions.
John D. Mackenzie, Qixin Huang, Takashi Iwamoto   +2 more
openaire   +1 more source

ORMOSIL films: Properties and microelectronic applications

Journal of Sol-Gel Science and Technology, 1997
The properties, as well as some issues of microelectronic applications of organically modified silicate (ORMOSIL) films, prepared by cohydrolysis in various proportions of tetraethoxysilane (TEOS) and phenyltriethoxysilane (PTEOS), or diphenyldiethylhexyloxydiethoxydisiloxane (DPS)1, are discussed.
K.A. Vorotilov, V.I. Petrovsky, V.A. Vasiljev, M.V. Sobolevsky   +3 more
openaire   +1 more source

Two Photon Polymerization of Ormosils

AIP Conference Proceedings, 2010
In this work, 3D structures of hybrid polymers—ORMOSILS (organically modified silicates) were produced via Two Photon Polymerization (2PP) of hybrid methacrylates based on silane derivates.Synthetic routes have been used to obtain series of hybrid monomers, their structure and purity being checked by NMR Spectroscopy and Fourier Transform Infrared ...
A. Matei, M. Zamfirescu, F. Jipa, C. Luculescu, M. Dinescu, E. C. Buruiana, T. Buruiana, L. E. Sima, S. M. Petrescu, Claude Phipps   +9 more
openaire   +1 more source

Ormosil coatings of high hardness

Journal of Materials Science, 1995
Organically modified silicates (ormosils) of two systems were coated on polyethyleneterephthalate (PET) substrates. One was the tetraethoxysilane (TEOS)-vinyltriethoxysilane (VTES) system and the other was the TEOS-tetraisopropyltitanate (TIPT)-VTES system. The reactions among the alkoxides were examined by liquid state 29Si nuclear magnetic resonance (
T. Iwamoto, J. D. Mackenzie
openaire   +1 more source

Tribological properties of ormosil coatings

Journal of Sol-Gel Science and Technology, 1996
Transparent plastics are not scratch resistant. The damage leads to a loss of optical properties. Coatings prepared using either tetraethoxysilane or colloidal silica particles embedded in “glymo” is a way to avoid these disadvantages. Tribological experiments are carried out to better understand the surface modification due to a sliding friction.
P. Etienne, J. Denape, J. Y. Paris, J. Phalippou, R. Sempere   +4 more
openaire   +1 more source