About: Synthesis and properties of hyperbranched polyimides combined with silica

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	The novel hyperbranched polyimide - silica hybrid materials containing theoretically 16 wt% of an inorganic phase were prepared via a sol-gel process. An amine terminated polyimide precursor (hyperbranched polyamic acid) was prepared from commercially available monomers 4,4,4%22-triaminotriphenylmethane and 4,4-oxydiphthalic anhydride in molar ratio 1:1. Tetramethoxysilane and/or 3-glycidoxypropyltrimethoxysilane (also used as a coupling agent) were used as silica precursors. During thermal exposition the polyimide precursor was transformed to hyperbranched polyimide and hydrolyzed alkoxy groups reacted mutually to form silica. The final products were self-standing films, whose structure was characterized by using IR and 13C and 29Si solid state NMR spectroscopy. The influence of the amount of silica and/or coupling agent on their structure and thermal properties was described. The novel hyperbranched polyimide - silica hybrid materials containing theoretically 16 wt% of an inorganic phase were prepared via a sol-gel process. An amine terminated polyimide precursor (hyperbranched polyamic acid) was prepared from commercially available monomers 4,4,4%22-triaminotriphenylmethane and 4,4-oxydiphthalic anhydride in molar ratio 1:1. Tetramethoxysilane and/or 3-glycidoxypropyltrimethoxysilane (also used as a coupling agent) were used as silica precursors. During thermal exposition the polyimide precursor was transformed to hyperbranched polyimide and hydrolyzed alkoxy groups reacted mutually to form silica. The final products were self-standing films, whose structure was characterized by using IR and 13C and 29Si solid state NMR spectroscopy. The influence of the amount of silica and/or coupling agent on their structure and thermal properties was described. (en)
Title	Synthesis and properties of hyperbranched polyimides combined with silica Synthesis and properties of hyperbranched polyimides combined with silica (en)
skos:prefLabel	Synthesis and properties of hyperbranched polyimides combined with silica Synthesis and properties of hyperbranched polyimides combined with silica (en)
skos:notation	RIV/61389013:_____/10:00432323!RIV15-AV0-61389013
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(GA104/09/1357), P(IAA400500602), Z(AV0Z40500505), Z(MSM6046137302)
http://linked.open...iv/cisloPeriodika	1
http://linked.open...vai/riv/dodaniDat	2015
http://linked.open...aciTvurceVysledku	Brus, Jiří Kobera, Libor
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	Ústav makromolekulární chemie AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	291491
http://linked.open...ai/riv/idVysledku	RIV/61389013:_____/10:00432323
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	hyperbranched polyimides; silica; sol-gel process (en)
http://linked.open.../riv/klicoveSlovo	sol-gel process silica hyperbranched polyimides
http://linked.open...odStatuVydavatele	DE - Spolková republika Německo
http://linked.open...ontrolniKodProRIV	[C6E6D160BF47]
http://linked.open...i/riv/nazevZdroje	Macromolecular Symposia
http://linked.open...in/vavai/riv/obor	CD
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	5 (xsd:int)
http://linked.open...vavai/riv/projekt	Development and application of solid-state NMR techniques to measure dipolar couplings - determination of three-dimensional structure and amplitude of internal motions in microcrystalline and highly organized self-assembled polymer systems. Preparation and Properties of Hyperbranched Polyimide-Silica Combined Materials Usable as Separation Membranes
http://linked.open...UplatneniVysledku	2010
http://linked.open...v/svazekPeriodika	295
http://linked.open...iv/tvurceVysledku	Brus, Jiří Kobera, Libor Sysel, P. Hauf, M. Minko, E.
http://linked.open...ain/vavai/riv/wos	000288038700011
http://linked.open...n/vavai/riv/zamer	Progresivní makromolekulární materiály a supramolekulární systémy: syntéza a studium vlastností, jevů a možností využití pro speciální aplikace a moderní technologie Preparation and research of functional materials and material technologies using micro- and nanoscopic methods
issn	1022-1360
number of pages	6 (xsd:int)
http://bibframe.org/vocab/doi	10.1002/masy.200900159

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