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Statements

Subject Item
n2:RIV%2F61389013%3A_____%2F11%3A00364739%21RIV12-AV0-61389013
rdf:type
n5:Vysledek skos:Concept
rdfs:seeAlso
http://www.weathering-symposium.org/books/books.htm
dcterms:description
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. 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.
dcterms:title
Exploitation of modern physical techniques in characterization of accelerated weathering processes in commodity polymers; ESRI, ATR FTIR and diffuse transmittance measurements Exploitation of modern physical techniques in characterization of accelerated weathering processes in commodity polymers; ESRI, ATR FTIR and diffuse transmittance measurements
skos:prefLabel
Exploitation of modern physical techniques in characterization of accelerated weathering processes in commodity polymers; ESRI, ATR FTIR and diffuse transmittance measurements Exploitation of modern physical techniques in characterization of accelerated weathering processes in commodity polymers; ESRI, ATR FTIR and diffuse transmittance measurements
skos:notation
RIV/61389013:_____/11:00364739!RIV12-AV0-61389013
n5:predkladatel
n6:ico%3A61389013
n3:aktivita
n8:Z n8:P
n3:aktivity
P(IAA400500804), Z(AV0Z40500505)
n3:dodaniDat
n13:2012
n3:domaciTvurceVysledku
n15:5861802 n15:6454666 n15:6499309 n15:5887852
n3:druhVysledku
n14:D
n3:duvernostUdaju
n21:S
n3:entitaPredkladatele
n18:predkladatel
n3:idSjednocenehoVysledku
198965
n3:idVysledku
RIV/61389013:_____/11:00364739
n3:jazykVysledku
n17:eng
n3:klicovaSlova
commodity polymers; photodegradation; diffuse transmittance
n3:klicoveSlovo
n4:diffuse%20transmittance n4:commodity%20polymers n4:photodegradation
n3:kontrolniKodProRIV
[F5C1151D9982]
n3:mistoKonaniAkce
Lisbon
n3:mistoVydani
Pfinztal
n3:nazevZdroje
Natural and Artificial Ageing of Polymers
n3:obor
n16:CD
n3:pocetDomacichTvurcuVysledku
4
n3:pocetTvurcuVysledku
4
n3:projekt
n11:IAA400500804
n3:rokUplatneniVysledku
n13:2011
n3:tvurceVysledku
Pilař, Jan Pfleger, Jiří Michálková, Danuše Šeděnková, Ivana
n3:typAkce
n19:WRD
n3:zahajeniAkce
2011-09-21+02:00
n3:zamer
n22:AV0Z40500505
s:numberOfPages
11
n20:hasPublisher
Confederation of European Environmental Engineering Societies (CEEES) - Gesellschaft für Umweltsimulation GUS
n10:isbn
978-3-9813136-2-8