About: The role of molecular parameters of PP in the sensitivity to specific nucleation

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	The study deals with efficiency of the β-nucleating agent in isotactic polypropylenes (iPP) differing in melt flow indexes (MFI). Polymorphic composition of neat iPP and iPP containing 0.01 and 0.03 wt.% of β-nucleator was analyzed using wide-angle X-ray scattering. iPP with 0.03 wt.% crystallizes predominantly into β-phase while neat iPP into α-phase, both independently on MFI. The formation of β-phase in iPP with 0.01 wt.% is influenced by MFI of materials. Also processing temperature causes significant change in crystallization behaviour which can be ascribed to partial solubility of β-nucleator in melt. Thus the effect of processing temperature and solubility of β-nucleator is discussed. The study deals with efficiency of the β-nucleating agent in isotactic polypropylenes (iPP) differing in melt flow indexes (MFI). Polymorphic composition of neat iPP and iPP containing 0.01 and 0.03 wt.% of β-nucleator was analyzed using wide-angle X-ray scattering. iPP with 0.03 wt.% crystallizes predominantly into β-phase while neat iPP into α-phase, both independently on MFI. The formation of β-phase in iPP with 0.01 wt.% is influenced by MFI of materials. Also processing temperature causes significant change in crystallization behaviour which can be ascribed to partial solubility of β-nucleator in melt. Thus the effect of processing temperature and solubility of β-nucleator is discussed. (en) Studie se zabývá účinností β-nukleačního činidla u izotaktického polypropylénu (PP), index toku taveniny (ITT) od 0,3 do 1200 g/10 min. Polymorfní složení čistého PP a PP obsahujícího 0.01 a 0.03 hm. % β-nukleátoru bylo analyzováno širokoúhlou spektroskopií. PP s 0.03 hm. % krystalizuje převážně do β-fáze, zatímco čistý PP do α-fáze, oba nezávisle na ITT. Vytváření β-fáze v PP s 0.01 hm. % je ovlivněno ITT materiálu. Taktéž teplota zpracování způsobuje značné změny v krystalizačním chování. Ty mohou být připsány částečné rozpustnosti β-nukleátoru v tavenině. Tudíž vliv zpracovatelských teplot a rozpustnosti β-nukleátoru je diskutován. (cs)
Title	The role of molecular parameters of PP in the sensitivity to specific nucleation Vliv molekulárních parametrů PP na citlivost na specifickou nukleaci (cs) The role of molecular parameters of PP in the sensitivity to specific nucleation (en)
skos:prefLabel	The role of molecular parameters of PP in the sensitivity to specific nucleation Vliv molekulárních parametrů PP na citlivost na specifickou nukleaci (cs) The role of molecular parameters of PP in the sensitivity to specific nucleation (en)
skos:notation	RIV/70883521:28110/08:63507034!RIV09-GA0-28110___
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(GP106/07/P262), Z(MSM7088352101)
http://linked.open...vai/riv/dodaniDat	2009
http://linked.open...aciTvurceVysledku	Navrátilová, Jana Obadal, Martin Čermák, Roman
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	393197
http://linked.open...ai/riv/idVysledku	RIV/70883521:28110/08:63507034
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	isotactic polypropylene; β-phase; specific nucleation; melt flow index (en)
http://linked.open.../riv/klicoveSlovo	isotactic polypropylene β-phase melt flow index specific nucleation
http://linked.open...ontrolniKodProRIV	[D7BF163A938F]
http://linked.open...v/mistoKonaniAkce	Milwaukee, USA
http://linked.open...i/riv/mistoVydani	Milwaukee
http://linked.open...i/riv/nazevZdroje	ANTEC 2008
http://linked.open...in/vavai/riv/obor	CD
http://linked.open...ichTvurcuVysledku	3 (xsd:int)
http://linked.open...cetTvurcuVysledku	4 (xsd:int)
http://linked.open...vavai/riv/projekt	Microfibrillar polymer-polymer composites prepared in-situ
http://linked.open...UplatneniVysledku	2008
http://linked.open...iv/tvurceVysledku	Navrátilová, Jana Čermák, Roman Obadal, Martin Chvátalová, Lenka
http://linked.open...vavai/riv/typAkce	WRD - Světová
http://linked.open.../riv/zahajeniAkce	2008-05-05 (xsd:date)
http://linked.open...n/vavai/riv/zamer	Multifunctional Composite Systems Based on Natural and Synthetic Polymers
number of pages	5 (xsd:int)
http://purl.org/ne...btex#hasPublisher	Curran Associates, Inc.
https://schema.org/isbn	978-1-60560-320-9
http://localhost/t...ganizacniJednotka	28110

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