Photo-re-stabilisation of recycled post-consumer films from greenhouses

The photo-oxidation behaviour of recycled post-consumer films from greenhouses has been studied in order to evaluate the environmental resistance of these secondary materials and the effect of some stabilising agents. The presence of the UV absorber slows down the weathering of the post-consumer mat...

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Bibliographic Details
Published in:Polymer degradation and stability 2004-09, Vol.85 (3), p.1041-1044
Main Authors: Tzankova Dintcheva, N, La Mantia, F.P
Format: Article
Language:English
Subjects:
Accelerated weathering
Applied sciences
Exact sciences and technology
Mechanical properties
Physicochemistry of polymers
Polymer industry, paints, wood
Post-consumer greenhouse film
Re-stabilisation
Technology of polymers
UV-absorber
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Summary:The photo-oxidation behaviour of recycled post-consumer films from greenhouses has been studied in order to evaluate the environmental resistance of these secondary materials and the effect of some stabilising agents. The presence of the UV absorber slows down the weathering of the post-consumer materials. After about 1000 h of accelerated weathering the unstabilised post-consumer material becomes brittle, while the re-stabilised post-consumer film becomes fragile only after about 1500 h. A synergistic effect is observed when an antioxidant and an UV stabiliser are added. Indeed, in this case, the recycled material is not brittle even after more than 1700 h. These last results can be probably correlated to the protective action of the antioxidant that avoids the formation of oxygenated compounds during the processing.
ISSN:0141-3910
1873-2321
DOI:10.1016/j.polymdegradstab.2003.05.003