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Transport in porous polyolefin particles - experiments and modeling

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22340%2F08%3A00020728" target="_blank" >RIV/60461373:22340/08:00020728 - isvavai.cz</a>

  • Result on the web

  • DOI - Digital Object Identifier

Alternative languages

  • Result language

    angličtina

  • Original language name

    Transport in porous polyolefin particles - experiments and modeling

  • Original language description

    Sorptions and desorptions of propylene in PP film by large pressure steps were carried out to verify if Fick's diffusion with estimated concentration dependency of diffusion coefficient from small step desorptions is capable to describe even these experiments. However, a very different transport behavior was found. The most important is the difference of the rates of sorption and desorption made by the pressure step between 1 and 25 bar of propylene. The rate of sorption is significantly faster than therate of desorption. In contrast, small step sorption and desorption didn't reveal such a behavior, that is, they have the same dynamics. Four transport models of penetrant in polymer were tested with respect to measured sorption and desorption characteristics. However, none of the considered models was capable to describe quantitatively the whole set of measured data.

  • Czech name

    Transport v porézních částicích polyolefinů - experimenty a modelování

  • Czech description

    Byly prováděny experimenty sorpce a desorpce propylénu ve filmu polypropylénu (PP), kde sorpce (nebo desorpce) byla způsobena velkým či malým skokem tlaku propylénu obklopujícího PP. Bylo testováno, zda koncentrační závislost difuzivity vyhodnocená z experimentů s malým tlakovým skokem je aplikovatelná také pro experimenty s velkým tlakovým skokem. Bylo zjištěno, že rychlost sorpce při rozdílu konečného a počátečního tlaku 25 bar je rychlejší než rychlost desorpce. Bylo testováno několik transportních modelů v kompaktních polymerech uvedených v literatuře. Žádný z testovaných modelů ale nebyl schopen kvantitativně fitovat celou množinu naměřených dat.

Classification

  • Type

    D - Article in proceedings

  • CEP classification

    CI - Industrial chemistry and chemical engineering

  • OECD FORD branch

Result continuities

  • Project

    <a href="/en/project/GA104%2F07%2F1127" target="_blank" >GA104/07/1127: Mathematical modeling and experimental study of the evolution of meso-scopic structure of polymeric materials</a><br>

  • Continuities

    Z - Vyzkumny zamer (s odkazem do CEZ)

Others

  • Publication year

    2008

  • Confidentiality

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

Data specific for result type

  • Article name in the collection

    Proceedings of 35th International Conference of Slovak Society of Chemical Engineering

  • ISBN

    978-80-227-2903-1

  • ISSN

  • e-ISSN

  • Number of pages

    12

  • Pages from-to

  • Publisher name

    Slovak society of chemical engineering

  • Place of publication

    Bratislava

  • Event location

    Tatranské Matliare

  • Event date

    May 26, 2008

  • Type of event by nationality

    WRD - Celosvětová akce

  • UT code for WoS article