Vliv specifické nukleace na teplotní chování fotodegradovaného polypropylenu

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F70883521%3A28110%2F07%3A63505297" target="_blank" >RIV/70883521:28110/07:63505297 - 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

The Effect of Nucleation Specificity on Thermal Behaviour of Photodegraded Polypropylene

Popis výsledku v původním jazyce

This work focuses on thermal behaviour of UV-irradiated polypropylenes (PP) containing &#945;- or &#946;-nucleating agents or their combination. After irradiation the samples were melted, then non-isothermally crystallized and subsequently melted again.It was found that &#946;-nucleated PP possessed the highest UV-stability. The photodegradation was also suppressed in materials containing &#945;-nucleating agent. The effect of UV-irradiation led to a splitting of crystallization exotherms into two peaks. The strong efficiency of &#945;-nucleating agent used was reflected by predominant formation of &#945;-phase in non-irradiated material containing a combination of both &#945;- and &#946;-nucleating agents. However, after only 24 hrs of UV-irradiationthis effect was reduced and a preferable formation into &#946;-phase in re-melted material was detected.

Název v anglickém jazyce

The Effect of Nucleation Specificity on Thermal Behaviour of Photodegraded Polypropylene

Popis výsledku anglicky

This work focuses on thermal behaviour of UV-irradiated polypropylenes (PP) containing &#945;- or &#946;-nucleating agents or their combination. After irradiation the samples were melted, then non-isothermally crystallized and subsequently melted again.It was found that &#946;-nucleated PP possessed the highest UV-stability. The photodegradation was also suppressed in materials containing &#945;-nucleating agent. The effect of UV-irradiation led to a splitting of crystallization exotherms into two peaks. The strong efficiency of &#945;-nucleating agent used was reflected by predominant formation of &#945;-phase in non-irradiated material containing a combination of both &#945;- and &#946;-nucleating agents. However, after only 24 hrs of UV-irradiationthis effect was reduced and a preferable formation into &#946;-phase in re-melted material was detected.

Druh

D - Stať ve sborníku

CEP obor

CD - Makromolekulární chemie

OECD FORD obor

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Projekt

<a href="/cs/project/GP106%2F07%2FP262" target="_blank" >GP106/07/P262: Mikrofibrilární polymer-polymer kompozity připravované in-situ</a><br>

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2007

Kód důvěrnosti údajů

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

Název statě ve sborníku

ANTEC 2007

ISBN

0-9753707-5-8

ISSN

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e-ISSN

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Počet stran výsledku

5

Strana od-do

308-312

Název nakladatele

Society of Plastics Engineers

Místo vydání

Dalla

Místo konání akce

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Datum konání akce

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Typ akce podle státní příslušnosti

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Kód UT WoS článku

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