Electron beam crosslinking of ethylene-octene copolymers

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F70883521%3A28140%2F15%3A43873763" target="_blank" >RIV/70883521:28140/15:43873763 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/70883521:28610/15:43873763 RIV/70883521:28150/15:43873763

Výsledek na webu

<a href="http://www.sciencedirect.com/science/article/pii/S0032386115303438" target="_blank" >http://www.sciencedirect.com/science/article/pii/S0032386115303438</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.polymer.2015.10.057" target="_blank" >10.1016/j.polymer.2015.10.057</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Electron beam crosslinking of ethylene-octene copolymers

Popis výsledku v původním jazyce

Seven ethylene-octene copolymers (EOC) with a wide range of octene content (17-45 wt. %) were crosslinked by e-beam radiation (in range 30-120 kGy). Testing methods included differential scanning calorimetry (DSC), dynamic mechanical analysis (DMA), high-temperature creep test, analysis of the gel content and rheology. It has been found that copolymers with higher initial molecular weight (or lower MFI) and higher branching density (or higher octene content) attain a higher level of crosslinking density. Increasing octene content brings about lower melting point (Tm), crystallization temperature (Tc), crystallinity (X), glass transition temperature (Tg) and storage modulus. Crosslinking influenced the properties below Tm only marginally. However, the properties above Tm were extremely influenced (high temperature creep). Above Tm (without the presence of crystals) only the chemical bonds hold the amorphous chains together which was manifested by creep gradually decreasing at 150 oC wit

Název v anglickém jazyce

Electron beam crosslinking of ethylene-octene copolymers

Popis výsledku anglicky

Seven ethylene-octene copolymers (EOC) with a wide range of octene content (17-45 wt. %) were crosslinked by e-beam radiation (in range 30-120 kGy). Testing methods included differential scanning calorimetry (DSC), dynamic mechanical analysis (DMA), high-temperature creep test, analysis of the gel content and rheology. It has been found that copolymers with higher initial molecular weight (or lower MFI) and higher branching density (or higher octene content) attain a higher level of crosslinking density. Increasing octene content brings about lower melting point (Tm), crystallization temperature (Tc), crystallinity (X), glass transition temperature (Tg) and storage modulus. Crosslinking influenced the properties below Tm only marginally. However, the properties above Tm were extremely influenced (high temperature creep). Above Tm (without the presence of crystals) only the chemical bonds hold the amorphous chains together which was manifested by creep gradually decreasing at 150 oC wit

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

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2015

Kód důvěrnosti údajů

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

Název periodika

Polymer

ISSN

0032-3861

e-ISSN

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Svazek periodika

81

Číslo periodika v rámci svazku

Neuveden

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

10

Strana od-do

119-128

Kód UT WoS článku

000365813800014

EID výsledku v databázi Scopus

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