About: Polyamide/layered silicate nanocomposites: A correlation between fracture toughness and molecular mobility

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	The study correlates toughness of polyamide nanocomposites with the molecular mobility of polymer segments in the amorphous phase. Nanocomposite systems with intercalated and fully exfoliated morphology were compared. The different morphology was imprinted in fracture behaviour, toughness of exfoliated nanocomposites was markedly lower that that of their intercalated counterparts. To explain this difference, a solid-state NMR was used as a selective tool for providing information about nanocomposites structure and, primarily, about dynamics of polymer segments. Comparison of NMR spin-relaxation behavior with fracture mechanics experiments revealed a close correlation between fracture toughness and the intensity of rapidly relaxing component of the amorphous phase. The study correlates toughness of polyamide nanocomposites with the molecular mobility of polymer segments in the amorphous phase. Nanocomposite systems with intercalated and fully exfoliated morphology were compared. The different morphology was imprinted in fracture behaviour, toughness of exfoliated nanocomposites was markedly lower that that of their intercalated counterparts. To explain this difference, a solid-state NMR was used as a selective tool for providing information about nanocomposites structure and, primarily, about dynamics of polymer segments. Comparison of NMR spin-relaxation behavior with fracture mechanics experiments revealed a close correlation between fracture toughness and the intensity of rapidly relaxing component of the amorphous phase. (en)
Title	Polyamide/layered silicate nanocomposites: A correlation between fracture toughness and molecular mobility Polyamide/layered silicate nanocomposites: A correlation between fracture toughness and molecular mobility (en)
skos:prefLabel	Polyamide/layered silicate nanocomposites: A correlation between fracture toughness and molecular mobility Polyamide/layered silicate nanocomposites: A correlation between fracture toughness and molecular mobility (en)
skos:notation	RIV/61389013:_____/09:00334339!RIV10-AV0-61389013
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(IAA400500602), P(KJB200500601), Z(AV0Z40500505)
http://linked.open...iv/cisloPeriodika	138
http://linked.open...vai/riv/dodaniDat	2010
http://linked.open...aciTvurceVysledku	Kotek, Jiří Kelnar, Ivan Urbanová, Martina Brus, Jiří
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	334140
http://linked.open...ai/riv/idVysledku	RIV/61389013:_____/09:00334339
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	nanocomposite; toughness; molecular mobility (en)
http://linked.open.../riv/klicoveSlovo	nanocomposite toughness molecular mobility
http://linked.open...odStatuVydavatele	US - Spojené státy americké
http://linked.open...ontrolniKodProRIV	[F08B8296D75D]
http://linked.open...i/riv/nazevZdroje	E-Polymers
http://linked.open...in/vavai/riv/obor	CD
http://linked.open...ichTvurcuVysledku	4 (xsd:int)
http://linked.open...cetTvurcuVysledku	4 (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. Micromechanisms and nanomechanisms in deformation and fracture of polymeric nanocomposites
http://linked.open...UplatneniVysledku	2009
http://linked.open...v/svazekPeriodika	-
http://linked.open...iv/tvurceVysledku	Kotek, Jiří Urbanová, Martina Kelnar, Ivan Brus, Jiří
http://linked.open...ain/vavai/riv/wos	000273086900001
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
issn	1618-7229
number of pages	11 (xsd:int)

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