About: Effect of Multiple Extrusion on Impact Fracture of Three Poly(propylene) Impact Copolymers

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	The effect of structural changes induced by multiple extrusion on the impact fracture behavior of three reactor poly(propylene) impact-copolymers (ICPPs) was investigated. The morphogenesis of the complex ICPP structure was controlled by the competition between the intraspherulitic phase separation and crystallization. The rubbery inclusion size was controlled by the rate of spinodal decomposition at the onset of crystallization. The following fast spherulite growth fixed the size and spatial distribution of these inclusions. The Charpy notched impact strength (ak) and critical strain energy release rate (Gc) measured under impact loading decreased significantly with the number of extruder passes. A measurable reduction of the size of the crack tip plastic zone (Rp) with the number of extruder passes was observed using high speed digital camera. While the melt flow index (MFI) dependence of ak exhibited ICPP specific shape, the MFI dependences of Gc fell on a single master curve at both 23 and 20 C. The effect of structural changes induced by multiple extrusion on the impact fracture behavior of three reactor poly(propylene) impact-copolymers (ICPPs) was investigated. The morphogenesis of the complex ICPP structure was controlled by the competition between the intraspherulitic phase separation and crystallization. The rubbery inclusion size was controlled by the rate of spinodal decomposition at the onset of crystallization. The following fast spherulite growth fixed the size and spatial distribution of these inclusions. The Charpy notched impact strength (ak) and critical strain energy release rate (Gc) measured under impact loading decreased significantly with the number of extruder passes. A measurable reduction of the size of the crack tip plastic zone (Rp) with the number of extruder passes was observed using high speed digital camera. While the melt flow index (MFI) dependence of ak exhibited ICPP specific shape, the MFI dependences of Gc fell on a single master curve at both 23 and 20 C. (en)
Title	Effect of Multiple Extrusion on Impact Fracture of Three Poly(propylene) Impact Copolymers Effect of Multiple Extrusion on Impact Fracture of Three Poly(propylene) Impact Copolymers (en)
skos:prefLabel	Effect of Multiple Extrusion on Impact Fracture of Three Poly(propylene) Impact Copolymers Effect of Multiple Extrusion on Impact Fracture of Three Poly(propylene) Impact Copolymers (en)
skos:notation	RIV/00216305:26620/13:PU107461!RIV14-GA0-26620___
http://linked.open...avai/riv/aktivita	P
http://linked.open...avai/riv/aktivity	P(GAP205/10/2259)
http://linked.open...iv/cisloPeriodika	1
http://linked.open...vai/riv/dodaniDat	2014
http://linked.open...aciTvurceVysledku	Jančář, Josef Tocháček, 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	Vysoké učení technické v Brně / Středoevropský technologický institut
http://linked.open...dnocenehoVysledku	71623
http://linked.open...ai/riv/idVysledku	RIV/00216305:26620/13:PU107461
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	ICPP, impact strength, fracture mechanics, thermal history (en)
http://linked.open.../riv/klicoveSlovo	thermal history ICPP fracture mechanics impact strength
http://linked.open...odStatuVydavatele	DE - Spolková republika Německo
http://linked.open...ontrolniKodProRIV	[88B99D10A04D]
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	2 (xsd:int)
http://linked.open...vavai/riv/projekt	Effect of nanoparticles on the chain mobility and crystallization kinetics in polyolefin nanocomposites
http://linked.open...UplatneniVysledku	2013
http://linked.open...v/svazekPeriodika	330
http://linked.open...iv/tvurceVysledku	Jančář, Josef Tocháček, Jiří
issn	1521-3900
number of pages	11 (xsd:int)
http://localhost/t...ganizacniJednotka	26620

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