Original title: Impact of weathering on chemical and morphological changes in stabilized polymers
Authors: Pospíšil, Jan ; Pilař, Jan ; Billingham, N. C. ; Marek, Antonín ; Kruliš, Zdeněk ; Nešpůrek, Stanislav ; Habicher, W. D.
Document type: Papers
Conference/Event: European Weathering Symposium /1./, Colloquium of Danubian Countries on Natural and Artificial Ageing of Polymers /23./, Praha (CZ), 2003-09-25 / 2003-09-26
Year: 2003
Language: eng
Abstract: Photooxidation, considered as the principal component of natural and accelerated weathering, affects together with oxygen,oxidizing and acid atmospheric pollutants durability of stabilized polymers by changing their chemical and supramolecular structure and influencing efficiency of stabilizers. Effects of the harshness of accelerated photooxidation, negative influences of atmospheric pollutants, heterogeneity in polymer oxidation together with formation of concentration gradients in stabilizer consumption and spatial distribution of stabilizer sacrificial transformation products are outlined. The data give more information on processes accompanying testing of stabilizer polymers and help to minimize misleading influences from over-accelerated tests.
Keywords: photooxidation; stabilizers; weathering
Project no.: CEZ:AV0Z4050913 (CEP), GA203/02/1243 (CEP), IBS4050008 (CEP), ME 543
Funding provider: GA ČR, GA AV ČR, GA MŠk
Host item entry: Documents, ISBN 3-9808382-3-4

Institution: Institute of Macromolecular Chemistry AS ČR (web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0085053

Permalink: http://www.nusl.cz/ntk/nusl-28029


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