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Degradation of polymer blends-IV. Natural weathering of blends of low density with linear low density polyethylene

par Daro, Arlette ;Trojan, Michèle ;David, Christiane ;Jacobs, Robert
Référence European Polymer Journal, 26, 1, page (47-52)
Publication Publié, 1990

Article révisé par les pairs

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Résumé :

The molecular weight distribution of low density polyethylene-linear low density polyethylene blends, photo-oxidized in natural weathering conditions, has been studied. The exposure conditions cover different periods of the year from May to December, and so a broad range of intensities, total incident energy and weather. A good correlation between the results corresponding to these different conditions has been obtained using the global incident energy and a simple model for its spectral distribution. Main chain scission is the main process but some crosslinking has also been detected. Preferential degradation of LLDPE could not be observed. © 1990.