About: Rheological behavior of polypropylene blends utilized in foaming process

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Description	Morphological structure of polypropylene foams represented by the size of the bubbles and bubbles density is significantly affected by rheological properties of the source materials. Various blends of high molecular weight and high melt strength polypropylenes were prepared in a twin screw extruder, and subsequently foamed. Their shear flow behavior as well as strain hardening during elongation were found to be the factors of a key importance in foaming process optimization. In addition, pressure dependent shear flow behavior of the tested materials was determined using capillary rheometer modified with backpressure chamber, and obtained dependencies of shear viscosity on pressure conditions were analyzed in order to further tailor blend compositions regarding their following use in foaming processes. It has been demonstrated that foam morphology might be controlled not only through degree of bubble coalescence and nucleation rate by the help of optimizing of material components ratio, but also via se Morphological structure of polypropylene foams represented by the size of the bubbles and bubbles density is significantly affected by rheological properties of the source materials. Various blends of high molecular weight and high melt strength polypropylenes were prepared in a twin screw extruder, and subsequently foamed. Their shear flow behavior as well as strain hardening during elongation were found to be the factors of a key importance in foaming process optimization. In addition, pressure dependent shear flow behavior of the tested materials was determined using capillary rheometer modified with backpressure chamber, and obtained dependencies of shear viscosity on pressure conditions were analyzed in order to further tailor blend compositions regarding their following use in foaming processes. It has been demonstrated that foam morphology might be controlled not only through degree of bubble coalescence and nucleation rate by the help of optimizing of material components ratio, but also via se (en)
Title	Rheological behavior of polypropylene blends utilized in foaming process Rheological behavior of polypropylene blends utilized in foaming process (en)
skos:prefLabel	Rheological behavior of polypropylene blends utilized in foaming process Rheological behavior of polypropylene blends utilized in foaming process (en)
skos:notation	RIV/70883521:28110/10:63509513!RIV11-MPO-28110___
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(2A-1TP1/126), Z(MSM7088352101)
http://linked.open...vai/riv/dodaniDat	2011
http://linked.open...aciTvurceVysledku	Sedláček, Tomáš Sáha, Petr Polášková, Martina Piyamanocha, Pongprapat
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	Univerzita Tomáše Bati ve Zlíně / Fakulta technologická
http://linked.open...dnocenehoVysledku	285254
http://linked.open...ai/riv/idVysledku	RIV/70883521:28110/10:63509513
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	polypropylene foam; rheology; strain hardening; foam morphology; pressure dependent viscosity (en)
http://linked.open.../riv/klicoveSlovo	pressure dependent viscosity strain hardening polypropylene foam rheology foam morphology
http://linked.open...ontrolniKodProRIV	[8C1155A8FD58]
http://linked.open...v/mistoKonaniAkce	Corfu Island, Greece
http://linked.open...i/riv/mistoVydani	Corfu Island
http://linked.open...i/riv/nazevZdroje	Latest Trends on Engineering Mechanics, Structures, Engineering Geology
http://linked.open...in/vavai/riv/obor	CD
http://linked.open...ichTvurcuVysledku	4 (xsd:int)
http://linked.open...cetTvurcuVysledku	5 (xsd:int)
http://linked.open...vavai/riv/projekt	Innovation of medical polymeric aids
http://linked.open...UplatneniVysledku	2010
http://linked.open...iv/tvurceVysledku	Filip, Petr Sedláček, Tomáš Sáha, Petr Piyamanocha, Pongprapat Polášková, Martina
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	Multifunctional Composite Systems Based on Natural and Synthetic Polymers
number of pages	4 (xsd:int)
http://purl.org/ne...btex#hasPublisher	WSEAS Press
https://schema.org/isbn	978-960-474-203-5
http://localhost/t...ganizacniJednotka	28110
is http://linked.open...avai/riv/vysledek of	Rheological behavior of polypropylene blends utilized in foaming process

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