About: Estimation of polyolefin particle morphology from degassing measurements and growth of polyolefin particles

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Transport of monomers, co-monomers and diluents in porous polyolefin particles occurring in catalytic polymerization reactors affects the rate of (co-)polymerization, the rate of particle degassing in the down-stream processing and the spatial distribution of copolymer composition in polyolefin particles. Investigations of monomer transport in PE and PP particles by gravimetric techniques conducted in our laboratory have confirmed the existence of large compact zones of polymer in polymer particles. Bobák et al. (2008) have shown that degassing of polyolefin particles is generally non-Fickian, as the fast degassing from small-size polymer zones is followed by a slow degassing from large polymer zones, cf. Figure below. The characteristic time of degassing of polypropylene (PP) particles is tens to hundreds of seconds, which is about 100 times slower than it was previously considered in theoretical considerations based on the so-called multi-grain model. We found that bidisperse particle morphology co Transport of monomers, co-monomers and diluents in porous polyolefin particles occurring in catalytic polymerization reactors affects the rate of (co-)polymerization, the rate of particle degassing in the down-stream processing and the spatial distribution of copolymer composition in polyolefin particles. Investigations of monomer transport in PE and PP particles by gravimetric techniques conducted in our laboratory have confirmed the existence of large compact zones of polymer in polymer particles. Bobák et al. (2008) have shown that degassing of polyolefin particles is generally non-Fickian, as the fast degassing from small-size polymer zones is followed by a slow degassing from large polymer zones, cf. Figure below. The characteristic time of degassing of polypropylene (PP) particles is tens to hundreds of seconds, which is about 100 times slower than it was previously considered in theoretical considerations based on the so-called multi-grain model. We found that bidisperse particle morphology co (en)
Title	Estimation of polyolefin particle morphology from degassing measurements and growth of polyolefin particles Estimation of polyolefin particle morphology from degassing measurements and growth of polyolefin particles (en)
skos:prefLabel	Estimation of polyolefin particle morphology from degassing measurements and growth of polyolefin particles Estimation of polyolefin particle morphology from degassing measurements and growth of polyolefin particles (en)
skos:notation	RIV/60461373:22340/10:00022885!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 Bobák, Marek
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	257564
http://linked.open...ai/riv/idVysledku	RIV/60461373:22340/10:00022885
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	degassing measurements; pressure-decay measurements; particle morphology; diffusion in polymers; polyolefins (en)
http://linked.open.../riv/klicoveSlovo	polyolefins degassing measurements diffusion in polymers particle morphology pressure-decay measurements
http://linked.open...ontrolniKodProRIV	[889D0CAECAD6]
http://linked.open...v/mistoKonaniAkce	Praha
http://linked.open...i/riv/mistoVydani	Praha
http://linked.open...i/riv/nazevZdroje	CHISA 2010
http://linked.open...in/vavai/riv/obor	CI
http://linked.open...ichTvurcuVysledku	5 (xsd:int)
http://linked.open...cetTvurcuVysledku	5 (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 Bobák, Marek
http://linked.open...vavai/riv/typAkce	WRD - Světová
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	12 (xsd:int)
http://purl.org/ne...btex#hasPublisher	Process Engineering Publisher, Novosad, J.
https://schema.org/isbn	978-80-02-02210-7
http://localhost/t...ganizacniJednotka	22340
is http://linked.open...avai/riv/vysledek of	Estimation of polyolefin particle morphology from degassing measurements and growth of polyolefin particles

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