DC Field | Value | Language |
---|---|---|
dc.contributor.author | Choi, Jae Young | ko |
dc.contributor.author | Kim, Chong Hee | ko |
dc.contributor.author | Kim, Do Kyung | ko |
dc.date.accessioned | 2010-11-23T01:53:14Z | - |
dc.date.available | 2010-11-23T01:53:14Z | - |
dc.date.created | 2012-02-06 | - |
dc.date.created | 2012-02-06 | - |
dc.date.issued | 1998-05 | - |
dc.identifier.citation | JOURNAL OF THE AMERICAN CERAMIC SOCIETY, v.81, no.5, pp.1184 - 1188 | - |
dc.identifier.issn | 0002-7820 | - |
dc.identifier.uri | http://hdl.handle.net/10203/20248 | - |
dc.description.abstract | Monodisperse, spherical organo-silica powders were synthesized from an immiscible mixture of an aqueous NH4OH solution and organo-alkoxysilanes, such as phenyl-trimethoxysilane (PTMS), methyltrimethoxysilane (MTMS), and methyltriethoxysilane (MTES), When the organo-alkoxysilanes were added to the aqueous NH4OH solution with stirring, organo-alkoxysilane/water macroemulsions were formed because of the immiscibility of the aqueous NH4OH solution and the organo-alkoxysilane, In the emulsion, organo-alkoxysilane droplets dissolved into the water phase through the droplet-water interface, and the organo-silica powder was formed by the hydrolysis and condensation of the organo-alkoxysilane. The powders were obtained reproducibly under broad concentrations of organo-alkoxysilanes; 0.3-1.5 mol/L for PTMS, 0.3-0.6 mol/L for MTMS, and MTES, with concentrations of ammonia between 0.0625 and 2.0 mol/L, According to the analysis of the solid-state MAS Si-29 NMR and the C-13 NMR analysis, the organo-silica powder did not contain any residual alkoxy groups, only carbon sources from nonhydrolyzable R groups: phenyl groups in PTMS, and methyl groups in MTMS and MTES. | - |
dc.language | English | - |
dc.language.iso | en_US | en |
dc.publisher | AMER CERAMIC SOC | - |
dc.subject | SOL-GEL METHOD | - |
dc.subject | CARBIDE | - |
dc.subject | HYDROLYSIS | - |
dc.subject | PARTICLES | - |
dc.subject | ALKOXIDES | - |
dc.subject | SPHERES | - |
dc.title | Formation and characterization of monodisperse, spherical organo-silica powders from organo-alkoxysilane-water system | - |
dc.type | Article | - |
dc.identifier.wosid | 000073564400012 | - |
dc.identifier.scopusid | 2-s2.0-0001539730 | - |
dc.type.rims | ART | - |
dc.citation.volume | 81 | - |
dc.citation.issue | 5 | - |
dc.citation.beginningpage | 1184 | - |
dc.citation.endingpage | 1188 | - |
dc.citation.publicationname | JOURNAL OF THE AMERICAN CERAMIC SOCIETY | - |
dc.embargo.liftdate | 9999-12-31 | - |
dc.embargo.terms | 9999-12-31 | - |
dc.contributor.localauthor | Kim, Do Kyung | - |
dc.contributor.nonIdAuthor | Choi, Jae Young | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordPlus | SOL-GEL METHOD | - |
dc.subject.keywordPlus | CARBIDE | - |
dc.subject.keywordPlus | HYDROLYSIS | - |
dc.subject.keywordPlus | PARTICLES | - |
dc.subject.keywordPlus | ALKOXIDES | - |
dc.subject.keywordPlus | SPHERES | - |
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