About: Diffusion of penetrants in porous and compact polyolefins

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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 penetrants in porous and compact polyolefins Diffusion of penetrants in porous and compact polyolefins (en)
skos:prefLabel	Diffusion of penetrants in porous and compact polyolefins Diffusion of penetrants in porous and compact polyolefins (en)
skos:notation	RIV/60461373:22340/09:00022865!RIV10-GA0-22340___
http://linked.open...avai/riv/aktivita	P
http://linked.open...avai/riv/aktivity	P(GA104/07/1127), P(GD104/08/H055)
http://linked.open...vai/riv/dodaniDat	2010
http://linked.open...aciTvurceVysledku	Kosek, Juraj Hajová, Hana Meisterová, Lucie
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	310532
http://linked.open...ai/riv/idVysledku	RIV/60461373:22340/09:00022865
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	sorption equilibria; diffusion in polymers; polyolefins (en)
http://linked.open.../riv/klicoveSlovo	polyolefins sorption equilibria diffusion in polymers
http://linked.open...ontrolniKodProRIV	[E4D50F5C1319]
http://linked.open...v/mistoKonaniAkce	Jablonec nad Nisou
http://linked.open...i/riv/mistoVydani	Praha
http://linked.open...i/riv/nazevZdroje	Sborník prací ze semináře Reakční a transportní jevy III
http://linked.open...in/vavai/riv/obor	CI
http://linked.open...ichTvurcuVysledku	3 (xsd:int)
http://linked.open...cetTvurcuVysledku	5 (xsd:int)
http://linked.open...vavai/riv/projekt	Transport and reaction processes in complex multiphase systems 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 Hajová, Hana Kosek, Juraj Smolná, Klára Pecháčková, Lucie
http://linked.open...vavai/riv/typAkce	CST - Celostátní
http://linked.open.../riv/zahajeniAkce	2009-06-10 (xsd:date)
number of pages	9 (xsd:int)
http://purl.org/ne...btex#hasPublisher	Vysoká škola chemicko-technologická v Praze
https://schema.org/isbn	978-80-7080-725-5
http://localhost/t...ganizacniJednotka	22340
is http://linked.open...avai/riv/vysledek of	Diffusion of penetrants in porous and compact polyolefins Diffusion of penetrants in porous and compact polyolefins Diffusion of penetrants in porous and compact polyolefins Diffusion of penetrants in porous and compact polyolefins

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