A New Approach to the Evaluation of Stabilizer Efficiency Under Photo-Ageing

Autor:	Pierre Lajoie, Ashustosh Kumar, Vincent Verney, Jacques Lacoste, Sophie Commereuc
Rok vydání:	2004
Předmět:	Work (thermodynamics) Materials science Polymers and Plastics EPDM rubber General Chemical Engineering Induction period Organic Chemistry Elastomer Characterization (materials science) Rheology Chemical engineering Materials Chemistry Organic chemistry Molecule sense organs Stabilizer (chemistry)
Zdroj:	Macromolecular Materials and Engineering. 289:387-392
ISSN:	1439-2054 1438-7492
Popis:	Elastomers are very sensitive to oxidative degradation dut to the combined effect of light and oxygen. Hence, we investigate the impact of stabilizers on the evolution of molecular structure of elastomers through photo-oxidation. While a dual processes is generally reported to describe photo-oxidation of elastomers (oxidation by-products formation and crosslinking), the aim of the current study is to provide a complete characterization of the efficiency of additives taking into account the dual processes: chemical changes (formation of photoproducts) and molecular structure changes (crosslinking). This work gives new insights about relationships between chemical changes and physical properties evolution of the material through ageing. We conclude that the two phenomenon are correlated to the primary peroxidation reaction and a dual efficiency does not exist for any additive.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::2bff1854e36aecf38ab87ee10ea5adf3 https://doi.org/10.1002/mame.200300385 Zobrazit plný text záznamu Plný text