About: Penetrant transport in semi-crystalline polyethylene measured by pressure decay method

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	In the case of semi-crystalline polymers, such as LLDPE, the equilibrium sorption in the polymer-penetrant system can?t be described as the simple sorption of penetrant in the amorphous polymer phase, because the swelling of amorphous polymer is elastically constrained by the surrounding crystallites. This constraining effect is the source of a large discrepancy between measured sorption data and theoretical predictions. The fraction of constrained segments of amorphous polymer has been determined from our previous gravimetric measurements in the apparatus utilizing magnetic suspension balance. The constraining effect is affecting also diffusion transport of penetrants in LLDPE. Therefore we constructed and are going to introduce a new pressure-decay apparatus capable to measure diffusion and sorption both above and below the polymer melting temperature. Results of these measurements are going to be explained and processed. However, these measurements provide us with the combined effect of elastic con In the case of semi-crystalline polymers, such as LLDPE, the equilibrium sorption in the polymer-penetrant system can?t be described as the simple sorption of penetrant in the amorphous polymer phase, because the swelling of amorphous polymer is elastically constrained by the surrounding crystallites. This constraining effect is the source of a large discrepancy between measured sorption data and theoretical predictions. The fraction of constrained segments of amorphous polymer has been determined from our previous gravimetric measurements in the apparatus utilizing magnetic suspension balance. The constraining effect is affecting also diffusion transport of penetrants in LLDPE. Therefore we constructed and are going to introduce a new pressure-decay apparatus capable to measure diffusion and sorption both above and below the polymer melting temperature. Results of these measurements are going to be explained and processed. However, these measurements provide us with the combined effect of elastic con (en)
Title	Penetrant transport in semi-crystalline polyethylene measured by pressure decay method Penetrant transport in semi-crystalline polyethylene measured by pressure decay method (en)
skos:prefLabel	Penetrant transport in semi-crystalline polyethylene measured by pressure decay method Penetrant transport in semi-crystalline polyethylene measured by pressure decay method (en)
skos:notation	RIV/60461373:22340/10:00023239!RIV11-GA0-22340___
http://linked.open...avai/riv/aktivita	P S Z
http://linked.open...avai/riv/aktivity	P(GAP106/10/1912), P(GD104/08/H055), S, Z(MSM6046137306)
http://linked.open...vai/riv/dodaniDat	2011
http://linked.open...aciTvurceVysledku	Kosek, Juraj Nistor, Andra Gregor, Tomáš 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	278418
http://linked.open...ai/riv/idVysledku	RIV/60461373:22340/10:00023239
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	porous polyolefin particles; degassing; polymerization (en)
http://linked.open.../riv/klicoveSlovo	degassing porous polyolefin particles polymerization
http://linked.open...ontrolniKodProRIV	[BA1A5F884040]
http://linked.open...v/mistoKonaniAkce	Litomyšl
http://linked.open...i/riv/mistoVydani	Praha
http://linked.open...i/riv/nazevZdroje	Reakční a transportní jevy IV
http://linked.open...in/vavai/riv/obor	CI
http://linked.open...ichTvurcuVysledku	4 (xsd:int)
http://linked.open...cetTvurcuVysledku	4 (xsd:int)
http://linked.open...vavai/riv/projekt	Morphology-dependent sorption and diffusion of penetrants in polymers Transport and reaction processes in complex multiphase systems
http://linked.open...UplatneniVysledku	2010
http://linked.open...iv/tvurceVysledku	Gregor, Tomáš Kosek, Juraj Nistor, Andra Meisterová, Lucie
http://linked.open...vavai/riv/typAkce	CST - Celostátní
http://linked.open.../riv/zahajeniAkce	2010-01-01 (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	9 (xsd:int)
http://purl.org/ne...btex#hasPublisher	Vysoká škola chemicko-technologická v Praze
https://schema.org/isbn	978-80-7080-761-3
http://localhost/t...ganizacniJednotka	22340
is http://linked.open...avai/riv/vysledek of	Penetrant transport in semi-crystalline polyethylene measured by pressure decay method

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