Effect of photochemical ageing on the tensile properties and behaviour law of unstabilized films of low-density polyethylene

Autor:	M. Lassiaz, J. Pouyet, Jacques Verdu
Rok vydání:	1994
Předmět:	Materials science Oxidative degradation Mechanical Engineering Infrared spectroscopy Polyethylene Photochemistry chemistry.chemical_compound Low-density polyethylene chemistry Mechanics of Materials Ageing Ultimate tensile strength General Materials Science Oxidation process Elongation
Zdroj:	Journal of Materials Science. 29:2177-2181
ISSN:	1573-4803 0022-2461
Popis:	Films of low-density polyethylene (LDPE) were exposed to artificial ageing in a photochemical reactor, and photochemical ageing was observed by tensile measurements. Oxidative degradation was characterized from carbonyl groups formation using infrared spectroscopy. Only ultimate properties seem to be affected, elastic properties being practically unaffected. In fact, the most obvious chemical effect induced in LDPE by exposure is the formation of carbonyl groups easily observable by infrared spectroscopy. Some elementary acts of the oxidation process induce chain scissions responsible for the decrease of elongation at break.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::263e8180d86dad7f74a9e46d62f18978 https://doi.org/10.1007/bf01154697 Zobrazit plný text záznamu Full text from SpringerLink