Fotodegradace polypropylenu obsahujícího nukleační činidla

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F70883521%3A28110%2F08%3A63507028" target="_blank" >RIV/70883521:28110/08:63507028 - 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

Photodegradation of Polypropylene Containing Nucleating Agents

Popis výsledku v původním jazyce

The work discusses the effects of polymorphism of isotactic polypropylene on its photodegradation behaviour. The starting polymer was modified by a specific ?-nucleating/clarifying agent, by a specific ?-nucleating agent or their combination. The samples, films of thickness 0.2 mm, were prepared via compression moulding. Differential scanning calorimetry revealed that the modification of isotactic polypropylene by a specific ?-nucleating agent caused predominant formation of the trigonal ?-phase. With virgin samples modified by ?-nucleating agent and combination of both nucleating agents and also with neat polypropylene only monoclinic ?-phase was detected. Thus the ?-nucleating agent possesses higher nucleating efficiency as compared to ?-nucleating agent. The samples were exposed to UV-irradiation in the interval from 0 to 240 hours. The differences in morphology were reflected in different photooxidative behaviour. Infrared spectroscopy showed that neat polyp

Název v anglickém jazyce

Photodegradation of Polypropylene Containing Nucleating Agents

Popis výsledku anglicky

The work discusses the effects of polymorphism of isotactic polypropylene on its photodegradation behaviour. The starting polymer was modified by a specific ?-nucleating/clarifying agent, by a specific ?-nucleating agent or their combination. The samples, films of thickness 0.2 mm, were prepared via compression moulding. Differential scanning calorimetry revealed that the modification of isotactic polypropylene by a specific ?-nucleating agent caused predominant formation of the trigonal ?-phase. With virgin samples modified by ?-nucleating agent and combination of both nucleating agents and also with neat polypropylene only monoclinic ?-phase was detected. Thus the ?-nucleating agent possesses higher nucleating efficiency as compared to ?-nucleating agent. The samples were exposed to UV-irradiation in the interval from 0 to 240 hours. The differences in morphology were reflected in different photooxidative behaviour. Infrared spectroscopy showed that neat polyp

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

2008

Kód důvěrnosti údajů

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

Název statě ve sborníku

PPS-24

ISBN

88-7897-025-5

ISSN

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e-ISSN

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Počet stran výsledku

1

Strana od-do

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Název nakladatele

Polymer Processing Society (IT)

Místo vydání

Salerno

Místo konání akce

Salerno, Italy

Datum konání akce

15. 6. 2008

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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