Samovyztužení jako důledek elongačního toku

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F70883521%3A28110%2F06%3A63504448" target="_blank" >RIV/70883521:28110/06:63504448 - 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

Self-reinforcement of polymers as a consequence of elongational flow

Popis výsledku v původním jazyce

In this study, attention is directed towards the abilities of elongational flow to induce the chain orientation and, as a consequence, to improve the properties of extruded profiles. A novel-designed extrusion die with semihyperbolic convergency of the channel, by which a high percentage of elongational flow in the melt is generated, was connected with a conventional single-screw extruder. Commercial grades of high-density polyethylene and isotactic polypropylene were used as model commodity polymers. Round extrudates prepared by this processing line were assessed as self-reinforced products. Detailed structural observation carried out with the aid of scanning electron microscopy and wide-angle X-ray scattering evidenced that the structure of extrudedrods is uniquely fibrous and highly oriented throughout the profile. As a result, the selfreinforced extrudates possess outstanding storage modulus in a wide range of temperatures and considerably higher melting point and fusion heat than

Název v anglickém jazyce

Self-reinforcement of polymers as a consequence of elongational flow

Popis výsledku anglicky

In this study, attention is directed towards the abilities of elongational flow to induce the chain orientation and, as a consequence, to improve the properties of extruded profiles. A novel-designed extrusion die with semihyperbolic convergency of the channel, by which a high percentage of elongational flow in the melt is generated, was connected with a conventional single-screw extruder. Commercial grades of high-density polyethylene and isotactic polypropylene were used as model commodity polymers. Round extrudates prepared by this processing line were assessed as self-reinforced products. Detailed structural observation carried out with the aid of scanning electron microscopy and wide-angle X-ray scattering evidenced that the structure of extrudedrods is uniquely fibrous and highly oriented throughout the profile. As a result, the selfreinforced extrudates possess outstanding storage modulus in a wide range of temperatures and considerably higher melting point and fusion heat than

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

<a href="/cs/project/GP106%2F03%2FP144" target="_blank" >GP106/03/P144: Optimalizace technologických podmínek procesu tokově indukované krystalizace ve vztahu ke struktuře a vlastnostem výrobků</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2006

Kód důvěrnosti údajů

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

Název periodika

Rheol Acta

ISSN

0035-4511

e-ISSN

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Svazek periodika

45

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

8

Strana od-do

366-373

Kód UT WoS článku

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EID výsledku v databázi Scopus

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