Exploitation of modern physical techniques in characterization of accelerated weathering processes in commodity polymers; ESRI, ATR FTIR and diffuse transmittance measurements

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389013%3A_____%2F11%3A00364739" target="_blank" >RIV/61389013:_____/11:00364739 - isvavai.cz</a>

Výsledek na webu

<a href="http://www.weathering-symposium.org/books/books.htm" target="_blank" >http://www.weathering-symposium.org/books/books.htm</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Exploitation of modern physical techniques in characterization of accelerated weathering processes in commodity polymers; ESRI, ATR FTIR and diffuse transmittance measurements

Popis výsledku v původním jazyce

Weathering of polymers comprises a large number of photooxidation processes triggered by environmental factors. It accounts for heterogeneous photodegradation that has negative impact on material properties of polymers. The degradation can be minimized by application of stabilizers, hindered amine stabilizers (HAS) in particular. We applied modern physical techniques that are able to bring unique information on the heterogeneity of the degradation process. Development of concentration profiles of nitroxides inside polymer plaques and concentrations of oxidation products on the surfaces and inside the plaques were determined by ESRI and by ATR FTIR, respectively. Diffuse optical transmission of the plaques was determined using spectrophotometer equippedwith an integration sphere. Data determined in four commodity carbon chain polymers PP, PE, PS and Topas stabilized with secondary HAS Tinuvin 770 and with Tinuvin NOR 123 are compared.

Název v anglickém jazyce

Exploitation of modern physical techniques in characterization of accelerated weathering processes in commodity polymers; ESRI, ATR FTIR and diffuse transmittance measurements

Popis výsledku anglicky

Weathering of polymers comprises a large number of photooxidation processes triggered by environmental factors. It accounts for heterogeneous photodegradation that has negative impact on material properties of polymers. The degradation can be minimized by application of stabilizers, hindered amine stabilizers (HAS) in particular. We applied modern physical techniques that are able to bring unique information on the heterogeneity of the degradation process. Development of concentration profiles of nitroxides inside polymer plaques and concentrations of oxidation products on the surfaces and inside the plaques were determined by ESRI and by ATR FTIR, respectively. Diffuse optical transmission of the plaques was determined using spectrophotometer equippedwith an integration sphere. Data determined in four commodity carbon chain polymers PP, PE, PS and Topas stabilized with secondary HAS Tinuvin 770 and with Tinuvin NOR 123 are compared.

Druh

D - Stať ve sborníku

CEP obor

CD - Makromolekulární chemie

OECD FORD obor

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Projekt

<a href="/cs/project/IAA400500804" target="_blank" >IAA400500804: Studium prostorové heterogenity foto- a termo-degradace tuhých polymerů moderními fyzikálními metodami</a><br>

Návaznosti

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

Rok uplatnění

2011

Kód důvěrnosti údajů

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

Název statě ve sborníku

Natural and Artificial Ageing of Polymers

ISBN

978-3-9813136-2-8

ISSN

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e-ISSN

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Počet stran výsledku

11

Strana od-do

359-369

Název nakladatele

Confederation of European Environmental Engineering Societies (CEEES) - Gesellschaft für Umweltsimulation GUS

Místo vydání

Pfinztal

Místo konání akce

Lisbon

Datum konání akce

21. 9. 2011

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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