Diffusion of monomers in polyethylene

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22340%2F09%3A00021975" target="_blank" >RIV/60461373:22340/09:00021975 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Diffusion of monomers in polyethylene

Popis výsledku v původním jazyce

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 obtaintransport 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

Název v anglickém jazyce

Diffusion of monomers in polyethylene

Popis výsledku anglicky

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 obtaintransport 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

Druh

D - Stať ve sborníku

CEP obor

CI - Průmyslová chemie a chemické inženýrství

OECD FORD obor

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Projekt

<a href="/cs/project/GA104%2F07%2F1127" target="_blank" >GA104/07/1127: Matematické modelování a experimentální studium utváření meso-skopické struktury polymerních materiálů</a><br>

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2009

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

CHISA 2009

ISBN

978-80-86059-51-8

ISSN

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e-ISSN

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Počet stran výsledku

12

Strana od-do

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Název nakladatele

Česká společnost chemického inženýrství

Místo vydání

Praha

Místo konání akce

Srní, Šumava

Datum konání akce

19. 10. 2009

Typ akce podle státní příslušnosti

CST - Celostátní akce

Kód UT WoS článku

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