Název:
Impact of weathering on chemical and morphological changes in stabilized polymers
Autoři:
Pospíšil, Jan ; Pilař, Jan ; Billingham, N. C. ; Marek, Antonín ; Kruliš, Zdeněk ; Nešpůrek, Stanislav ; Habicher, W. D. Typ dokumentu: Příspěvky z konference Konference/Akce: European Weathering Symposium /1./, Colloquium of Danubian Countries on Natural and Artificial Ageing of Polymers /23./, Praha (CZ), 2003-09-25 / 2003-09-26
Rok:
2003
Jazyk:
eng
Abstrakt: 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.
Klíčová slova:
photooxidation; stabilizers; weathering Číslo projektu: CEZ:AV0Z4050913 (CEP), GA203/02/1243 (CEP), IBS4050008 (CEP), ME 543 Poskytovatel projektu: GA ČR, GA AV ČR, GA MŠk Zdrojový dokument: Documents, ISBN 3-9808382-3-4
Instituce: Ústav makromolekulární chemie AV ČR
(web)
Informace o dostupnosti dokumentu:
Dokument je dostupný v příslušném ústavu Akademie věd ČR. Původní záznam: http://hdl.handle.net/11104/0085053