Crystallization Kinetics of Polypropylene/Ethylene-Octene Copolymer Blends

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F70883521%3A28110%2F09%3A63508038" target="_blank" >RIV/70883521:28110/09:63508038 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Crystallization Kinetics of Polypropylene/Ethylene-Octene Copolymer Blends

Popis výsledku v původním jazyce

Blends of polypropylene and ethylene-octene copolymers (EOC) were investigated by transmission electron microscopy, optical microscopy and DSC. The main focus was on phase morphology and crystallization for blends containing EOC with different octene content (28, 37 and 52 wt.%). Also, for a given octene content (37 wt.%), the effect of molecular weight (115, 180, 229k) of EOC on morphology was observed. The largest particles were found in the blend with EOC-28 and the smallest with EOC-52. This blend with the smallest particles exhibits the fastest crystallization kinetics by two independent methods, optical microscopy and DSC. This behavior was explained by a model. Crystallizing PP lamellae have to travel longer distance going around large particleswhich slows down overall crystallization growth rate. In the case of smaller particles, the obstacles are smaller and the crystallization is faster.

Název v anglickém jazyce

Crystallization Kinetics of Polypropylene/Ethylene-Octene Copolymer Blends

Popis výsledku anglicky

Blends of polypropylene and ethylene-octene copolymers (EOC) were investigated by transmission electron microscopy, optical microscopy and DSC. The main focus was on phase morphology and crystallization for blends containing EOC with different octene content (28, 37 and 52 wt.%). Also, for a given octene content (37 wt.%), the effect of molecular weight (115, 180, 229k) of EOC on morphology was observed. The largest particles were found in the blend with EOC-28 and the smallest with EOC-52. This blend with the smallest particles exhibits the fastest crystallization kinetics by two independent methods, optical microscopy and DSC. This behavior was explained by a model. Crystallizing PP lamellae have to travel longer distance going around large particleswhich slows down overall crystallization growth rate. In the case of smaller particles, the obstacles are smaller and the crystallization is faster.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CD - Makromolekulární chemie

OECD FORD obor

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Projekt

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2009

Kód důvěrnosti údajů

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

Název periodika

Polymer Testing

ISSN

0142-9418

e-ISSN

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Svazek periodika

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Číslo periodika v rámci svazku

28

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

8

Strana od-do

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Kód UT WoS článku

000264696600016

EID výsledku v databázi Scopus

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