About: Structure of silicon oxycarbide glasses derived from poly(methylsiloxane) and poly[methyl(phenyl)siloxane] precursors

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About: Structure of silicon oxycarbide glasses derived from poly(methylsiloxane) and poly[methyl(phenyl)siloxane] precursors Goto Sponge NotDistinct Permalink

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	The preparation of silicon oxycarbide glasses and structure changes ofpolysiloxane precursors during heat-treatment in oxidative and nitrogen atmosphere are studied by 13C and 29Si magic angle spinning (MAS) NMR, FTIR spectroscopy and thermogravimetry. analysis. The reaction mechanisms in inert and oxidation conditions are discussed with respect to the chemical composition of the used precursors. We focused on the formation of new silicon oxycarbide units as well as a highly condensed aromatic carbon phase, the structure of which is discussed. A correlation of thermo-oxidative properties with chemical structure of prepared materials as well as with conditions of their preparation is given The preparation of silicon oxycarbide glasses and structure changes ofpolysiloxane precursors during heat-treatment in oxidative and nitrogen atmosphere are studied by 13C and 29Si magic angle spinning (MAS) NMR, FTIR spectroscopy and thermogravimetry. analysis. The reaction mechanisms in inert and oxidation conditions are discussed with respect to the chemical composition of the used precursors. We focused on the formation of new silicon oxycarbide units as well as a highly condensed aromatic carbon phase, the structure of which is discussed. A correlation of thermo-oxidative properties with chemical structure of prepared materials as well as with conditions of their preparation is given (en)
Title	Structure of silicon oxycarbide glasses derived from poly(methylsiloxane) and poly[methyl(phenyl)siloxane] precursors Structure of silicon oxycarbide glasses derived from poly(methylsiloxane) and poly[methyl(phenyl)siloxane] precursors (en)
skos:prefLabel	Structure of silicon oxycarbide glasses derived from poly(methylsiloxane) and poly[methyl(phenyl)siloxane] precursors Structure of silicon oxycarbide glasses derived from poly(methylsiloxane) and poly[methyl(phenyl)siloxane] precursors (en)
skos:notation	RIV/60461373:22640/01:00004526!RIV/2004/GA0/226404/N
http://linked.open.../vavai/riv/strany	62-74
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(GA104/00/1140), P(GA106/99/0668), P(GA203/98/P290), P(KSK2050602), Z(AV0Z3046908), Z(AV0Z4050913)
http://linked.open...iv/cisloPeriodika	1-3
http://linked.open...vai/riv/dodaniDat	2004
http://linked.open...aciTvurceVysledku	Machovič, Vladimír
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Vysoká škola chemicko-technologická v Praze / Centrální laboratoře
http://linked.open...dnocenehoVysledku	697503
http://linked.open...ai/riv/idVysledku	RIV/60461373:22640/01:00004526
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	siloxane, pyrolysis, silicon oxycarbide, NMR, FTIR (en)
http://linked.open.../riv/klicoveSlovo	silicon oxycarbide siloxane FTIR NMR pyrolysis
http://linked.open...odStatuVydavatele	BE - Belgické království
http://linked.open...ontrolniKodProRIV	[2B160728264D]
http://linked.open...i/riv/nazevZdroje	Journal of non-crystalline solids
http://linked.open...in/vavai/riv/obor	JI
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	4 (xsd:int)
http://linked.open...ocetUcastnikuAkce	0 (xsd:int)
http://linked.open...nichUcastnikuAkce	0 (xsd:int)
http://linked.open...vavai/riv/projekt	Composites on the basic of glass fibres and siloxane matrix for the application at high temperatures Structure and molecular dynamics of polysiloxane networks investigated by solid-state NMR spectroscopy Materials resistant to temperature and oxidation on the basis of pyrolyzed polysiloxanes Targeted synthesis of chemical compounds with defined properties
http://linked.open...UplatneniVysledku	2001
http://linked.open...v/svazekPeriodika	289
http://linked.open...iv/tvurceVysledku	Machovič, Vladimír Kolář, František Brus, Jiří Svítilová, Jaroslava
http://linked.open...n/vavai/riv/zamer	Cílená syntéza a studium chemických, fyzikálně-chemických a fyzikálních vlastností makromolekulárních a nadmolekulárních látek a soustav pro vyspělé technologie Geodynamické procesy ve svrchní vrstvě zemské kůry ovlivňující životní prostředí a ekologické využívání surovin
issn	0022-3093
number of pages	12 (xsd:int)
http://localhost/t...ganizacniJednotka	22640

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