Transport and reaction in reconstructed porous polypropylene particles: Model validation

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22340%2F10%3A00023314" target="_blank" >RIV/60461373:22340/10:00023314 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Transport and reaction in reconstructed porous polypropylene particles: Model validation

Original language description

We attempt to validate tomography-based spatially 3D model of polypropylene particle by comparison of model predictions with measured degassing characteristics of polypropylene powder samples. Statistically relevant number of porous PP particles from three particle size fractions is inspected by X-ray micro-tomography. The voxel size of reconstructed porous PP particles is between 1 and 5 pm. We show that closed porosity occurring in reconstructed particles has a negligible effect on the dynamics of particle degassing. It was found that the voxel size smaller than 3 pm is required for a good agreement between model predictions and experimental data. We demonstrate that tomography-based model is capable to address the problem of mass transport limitation during polymerization reaction in real particle structure. Two statistical descriptors suitable for the characterization of compact zones of polymers occurring in polypropylene particles are introduced.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

CI - Industrial chemistry and chemical engineering

OECD FORD branch

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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)<br>S - Specificky vyzkum na vysokych skolach

Publication year

2010

Confidentiality

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

Name of the periodical

Chemical Engineering Science

ISSN

0009-2509

e-ISSN

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Volume of the periodical

65

Issue of the periodical within the volume

duben

Country of publishing house

GB - UNITED KINGDOM

Number of pages

12

Pages from-to

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UT code for WoS article

000276334300011

EID of the result in the Scopus database

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