Discoloration of polymers by phenolic antioxidants

0188859 - UMCH-V 20023124 RIV GB eng J - Článek v odborném periodiku
Pospíšil, Jan - Habicher, W. D. - Pilař, Jan - Nešpůrek, Stanislav - Kuthan, J. - Piringer, G. O. - Zweifel, H.
Discoloration of polymers by phenolic antioxidants.
Polymer Degradation and Stability. Roč. 77, č. 3 (2002), s. 531-538. ISSN 0141-3910. E-ISSN 1873-2321
Grant CEP: GA ČR GA202/01/0518; GA ČR GA203/02/1243
Výzkumný záměr: CEZ:AV0Z4050913
Klíčová slova: polymer discoloration * phenolic antioxidant * antioxidant transformation
Kód oboru RIV: CD - Makromolekulární chemie
Impakt faktor: 1.145, rok: 2002

Part of colour development in aged polyolefins stabilized with phenolic antioxidants can be attributed to the formation of conjugated diene compounds, arising as a consequence of sacrificial trapping of alkylperoxy radicals by phenolics. The discoloration depends on the structure and concentration of the phenol transformation products. Peroxycyclohexadienones are formed transiently in low concentrations and themselves do not discolour the polymer matrix.
Trvalý link: http://hdl.handle.net/11104/0084741