Influence of supercritical CO2 and initial melting temperature on crystallization of polypropylene/organoclay nanocomposite

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F70883521%3A28140%2F12%3A43867821" target="_blank" >RIV/70883521:28140/12:43867821 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/70883521:28110/12:43867821 RIV/70883521:28610/12:43867821 RIV/70883521:28150/12:43867821

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.polymertesting.2012.01.004" target="_blank" >http://dx.doi.org/10.1016/j.polymertesting.2012.01.004</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.polymertesting.2012.01.004" target="_blank" >10.1016/j.polymertesting.2012.01.004</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Influence of supercritical CO2 and initial melting temperature on crystallization of polypropylene/organoclay nanocomposite

Popis výsledku v původním jazyce

Polypropylene (PP)/clay nanocomposite with maleic anhydride modified polypropylene (PP-MA) was prepared using a twin-screw extruder. The effect of supercritical carbon dioxide (scCO(2)) on mixing was investigated. Isothermal crystallization of the nanocomposites was investigated by differential scanning calorimetry (DSC) and also by optical microscopy as a function of initial melting temperature. Increasing initial melting temperature causes a gradual decrease in bulk crystallization kinetics, with theexception of the 240-260 degrees C temperature range for the system without CO2. Optical microscopy revealed a large number of small spherulites for the system without CO2 after initial melting at 250 degrees C. After 28 min initial induction period of crystallization many small spherulites appeared in the vicinity of large spherulites for the system with CO2, indicating the beginning of homogenous nucleation. X-ray diffraction (XRD) and direct observation of the samples after tensile te

Název v anglickém jazyce

Influence of supercritical CO2 and initial melting temperature on crystallization of polypropylene/organoclay nanocomposite

Popis výsledku anglicky

Polypropylene (PP)/clay nanocomposite with maleic anhydride modified polypropylene (PP-MA) was prepared using a twin-screw extruder. The effect of supercritical carbon dioxide (scCO(2)) on mixing was investigated. Isothermal crystallization of the nanocomposites was investigated by differential scanning calorimetry (DSC) and also by optical microscopy as a function of initial melting temperature. Increasing initial melting temperature causes a gradual decrease in bulk crystallization kinetics, with theexception of the 240-260 degrees C temperature range for the system without CO2. Optical microscopy revealed a large number of small spherulites for the system without CO2 after initial melting at 250 degrees C. After 28 min initial induction period of crystallization many small spherulites appeared in the vicinity of large spherulites for the system with CO2, indicating the beginning of homogenous nucleation. X-ray diffraction (XRD) and direct observation of the samples after tensile te

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

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2012

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

31

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

11

Strana od-do

444-454

Kód UT WoS článku

000302758100012

EID výsledku v databázi Scopus

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