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Exploitation of modern physical techniques in characterization of accelerated weathering processes in commodity polymers; ESRI, ATR FTIR and diffuse transmittance measurements
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SYSNO ASEP 0364739 Druh ASEP C - Konferenční příspěvek (mezinárodní konf.) Zařazení RIV D - Článek ve sborníku Název Exploitation of modern physical techniques in characterization of accelerated weathering processes in commodity polymers; ESRI, ATR FTIR and diffuse transmittance measurements Tvůrce(i) Pilař, Jan (UMCH-V) RID, ORCID
Šeděnková, Ivana (UMCH-V) RID
Pfleger, Jiří (UMCH-V) RID
Michálková, Danuše (UMCH-V)Zdroj.dok. Natural and Artificial Ageing of Polymers, Publication No.15. - Pfinztal : Confederation of European Environmental Engineering Societies (CEEES) - Gesellschaft für Umweltsimulation GUS, 2011 / Reichert T. - ISBN 978-3-9813136-2-8 Rozsah stran s. 359-369 Poč.str. 11 s. Akce European Weathering Symposium /5./ Datum konání 21.09.2011-23.09.2011 Místo konání Lisbon Země PT - Portugalsko Typ akce WRD Jazyk dok. eng - angličtina Země vyd. DE - Německo Klíč. slova commodity polymers ; photodegradation ; diffuse transmittance Vědní obor RIV CD - Makromolekulární chemie CEP IAA400500804 GA AV ČR - Akademie věd CEZ AV0Z40500505 - UMCH-V (2005-2011) Anotace 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 equipped with 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. Pracoviště Ústav makromolekulární chemie Kontakt Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358 Rok sběru 2012 Elektronická adresa http://www.weathering-symposium.org/books/books.htm
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