About: Diffusion of monomers in polyethylene

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	The objective of this study is the transport of low molecular weight penetrants, such as ethylene, propylene and 1-hexene, in compact polyethylene (PE) or polypropylene (PP). Gravimetric sorption/desorption measurements were conducted in order to obtain transport characteristics as the time-dependence of the mass of sorbed species. Sorption and desorption characteristics were measured as responses to small and large pressure steps of penetrants. Small pressure steps covered the pressure range of interest and obtained transport characteristics provided the information about the concentration dependence of penetrant diffusivity in polymer. Penetrant diffusivities in compact polyolefin films, particles or threads were estimated by means of the simple model based on Fick?s diffusion. We provide short motivation for our study from the point of view of fundamental understanding of the problem. Moreover, we discuss current state-of-the-art of this problematic and explain the sources of large discrepancies be The objective of this study is the transport of low molecular weight penetrants, such as ethylene, propylene and 1-hexene, in compact polyethylene (PE) or polypropylene (PP). Gravimetric sorption/desorption measurements were conducted in order to obtain transport characteristics as the time-dependence of the mass of sorbed species. Sorption and desorption characteristics were measured as responses to small and large pressure steps of penetrants. Small pressure steps covered the pressure range of interest and obtained transport characteristics provided the information about the concentration dependence of penetrant diffusivity in polymer. Penetrant diffusivities in compact polyolefin films, particles or threads were estimated by means of the simple model based on Fick?s diffusion. We provide short motivation for our study from the point of view of fundamental understanding of the problem. Moreover, we discuss current state-of-the-art of this problematic and explain the sources of large discrepancies be (en)
Title	Diffusion of monomers in polyethylene Diffusion of monomers in polyethylene (en)
skos:prefLabel	Diffusion of monomers in polyethylene Diffusion of monomers in polyethylene (en)
skos:notation	RIV/60461373:22340/09:00021975!RIV10-MSM-22340___
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(GA104/07/1127), Z(MSM6046137306)
http://linked.open...vai/riv/dodaniDat	2010
http://linked.open...aciTvurceVysledku	Kosek, Juraj Meisterová, Lucie Bobák, Marek Holeček, Oldřich
http://linked.open.../riv/druhVysledku	D - Článek ve sborníku
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 / Fakulta chemicko-inženýrská
http://linked.open...dnocenehoVysledku	310527
http://linked.open...ai/riv/idVysledku	RIV/60461373:22340/09:00021975
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	sorption equilibria; diffusion in polymers; polyolefins; pressure decay (en)
http://linked.open.../riv/klicoveSlovo	polyolefins sorption equilibria pressure decay diffusion in polymers
http://linked.open...ontrolniKodProRIV	[BA72AE13AB2A]
http://linked.open...v/mistoKonaniAkce	Srní, Šumava
http://linked.open...i/riv/mistoVydani	Praha
http://linked.open...i/riv/nazevZdroje	CHISA 2009
http://linked.open...in/vavai/riv/obor	CI
http://linked.open...ichTvurcuVysledku	4 (xsd:int)
http://linked.open...cetTvurcuVysledku	5 (xsd:int)
http://linked.open...vavai/riv/projekt	Mathematical modeling and experimental study of the evolution of meso-scopic structure of polymeric materials
http://linked.open...UplatneniVysledku	2009
http://linked.open...iv/tvurceVysledku	Gregor, Tomáš Kosek, Juraj Bobák, Marek Holeček, Oldřich Pecháčková, Lucie
http://linked.open...vavai/riv/typAkce	CST - Celostátní
http://linked.open.../riv/zahajeniAkce	2009-10-19 (xsd:date)
http://linked.open...n/vavai/riv/zamer	Reakčně-transportní chemicko-inženýrské systémy a jejich dynamické chování, modelování a řízení chemických a biotechnologických procesů
number of pages	12 (xsd:int)
http://purl.org/ne...btex#hasPublisher	Česká společnost chemického inženýrství
https://schema.org/isbn	978-80-86059-51-8
http://localhost/t...ganizacniJednotka	22340
is http://linked.open...avai/riv/vysledek of	Diffusion of monomers in polyethylene Diffusion of monomers in polyethylene Diffusion of monomers in polyethylene Diffusion of monomers in polyethylene

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