Results 211 to 220 of about 174,711 (259)
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European Polymer Journal, 2002
Abstract Silica gel microspheres 7 and 15 μm in diameter were coated with an overlayer of polyaniline camphorsulfonate or hydrochloride during the oxidative polymerization of aniline. Coated silica gel and polyaniline precipitate were separated using a difference in sedimentation rate.
Jaroslav Stejskal +7 more
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Abstract Silica gel microspheres 7 and 15 μm in diameter were coated with an overlayer of polyaniline camphorsulfonate or hydrochloride during the oxidative polymerization of aniline. Coated silica gel and polyaniline precipitate were separated using a difference in sedimentation rate.
Jaroslav Stejskal +7 more
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Flame retardant mechanism of silica gel/silica
Fire and Materials, 2000Various types of silica, silica gel, fumed silicas and fused silica were added to polypropylene and polyethylene oxide to determine their flame retardant effectiveness and mechanisms. Polypropylene was chosen as a non-char-forming thermoplastic and polyethylene oxide was chosen as a polar char-forming (slight) thermoplastic.
Takashi Kashiwagi +5 more
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Toroidal microporous silica gel
Journal of Materials Science, 1979Microporous amorphous silica gel with a characteristic toroidal form of the elementary particles, has been prepared by thermal dissociation of a solution of silicic acid in a spray dryer. The substance obtained was investigated by electron microscopy, infra-red spectroscopy and thermal analysis.
A. Zapryanova +2 more
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Zone electrophoresis in silica gel and silica paste
Biochimica et Biophysica Acta, 1960Abstract Silica gel and silica paste have been used as anticonvection media in zone electrophoresis. Rapid methods for preparing gels and pastes containing the appropriate electrophoretic buffer, and their use in zone electrophoresis, are given.
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2001
[10028-15-6] O3 (MW 48.00) InChI = 1S/O3/c1-3-2 InChIKey = CBENFWSGALASAD-UHFFFAOYSA-N (powerful oxidizing agent; capable of oxidizing carbon–hydrogen bonds2 and a variety of electron-rich functional groups; provides a high effective concentration of ozone2a) Physical Data: ozone, mp −193 °C; bp −111.9 °C; d (0 °C, gas ...
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[10028-15-6] O3 (MW 48.00) InChI = 1S/O3/c1-3-2 InChIKey = CBENFWSGALASAD-UHFFFAOYSA-N (powerful oxidizing agent; capable of oxidizing carbon–hydrogen bonds2 and a variety of electron-rich functional groups; provides a high effective concentration of ozone2a) Physical Data: ozone, mp −193 °C; bp −111.9 °C; d (0 °C, gas ...
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2008
(for fluorous solid-phase extraction (F-SPE) of fluorous compounds including catalysts, scavengers, reagents, small molecules, and biomolecules; HPLC stationary phase for analysis and separation of fluorinated and nonfluorinated compounds) Physical Data: free-flowing white powder, SPE-grade silica gel, 8.5% carbon loading, average particle size ...
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(for fluorous solid-phase extraction (F-SPE) of fluorous compounds including catalysts, scavengers, reagents, small molecules, and biomolecules; HPLC stationary phase for analysis and separation of fluorinated and nonfluorinated compounds) Physical Data: free-flowing white powder, SPE-grade silica gel, 8.5% carbon loading, average particle size ...
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Journal of Non-Crystalline Solids, 1988
Abstract The elastic modulus, modulus of rupture (MOR), and viscosity of wet silica gels were measured as functions of age of the gels, using a beam-bending method. The gels were prepared by acid-catalyzed hydrolysis of tetraethyl orthosilicate (TEOS) with a water/TEOS ratio of 16/1.
George W. Scherer +2 more
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Abstract The elastic modulus, modulus of rupture (MOR), and viscosity of wet silica gels were measured as functions of age of the gels, using a beam-bending method. The gels were prepared by acid-catalyzed hydrolysis of tetraethyl orthosilicate (TEOS) with a water/TEOS ratio of 16/1.
George W. Scherer +2 more
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MRS Proceedings, 1988
ABSTRACTThe driving force for syneresis is generally attributed to the same chemical reactions that produce gelation, but it has also been proposed that shrinkage could be driven by interracial energy. The latter possibility is explored and discounted. The kinetics of syneresis depend on the driving force, the mobility of the gel network, and the rate ...
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ABSTRACTThe driving force for syneresis is generally attributed to the same chemical reactions that produce gelation, but it has also been proposed that shrinkage could be driven by interracial energy. The latter possibility is explored and discounted. The kinetics of syneresis depend on the driving force, the mobility of the gel network, and the rate ...
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2017
<div class="section abstract"> <div class="htmlview paragraph">This specification covers silica gel dehydrating agent in the form of a granular powder in either plain or indicator grades. Indicator grades shall be impregnated with cobalt chloride.</div></div>
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<div class="section abstract"> <div class="htmlview paragraph">This specification covers silica gel dehydrating agent in the form of a granular powder in either plain or indicator grades. Indicator grades shall be impregnated with cobalt chloride.</div></div>
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