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Multilayer films ageing under ultraviolet radiations: Complementary study by dielectric spectroscopy

Lewandowski, Simon and Rejsek-Riba, Virginie and Bernès, Alain and Perraud, Sophie and Lacabanne, Colette Multilayer films ageing under ultraviolet radiations: Complementary study by dielectric spectroscopy. (2013) Journal of Applied Polymer Science, 129 (6). 3772-3781. ISSN 0021-8995

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Official URL: http://dx.doi.org/10.1002/app.38747

Abstract

The effect of ultraviolet (UV) irradiation on a multilayer film made of poly(ethylene terephthalate)/Polyamide 6/poly(ethylene terephthalate) was investigated by uniaxial tractions, UV-visible-NIR and Fourier transformed infra-red-attenuated total reflection spectroscopy, differential scanning calorimetry (DSC), and dynamic dielectric spectroscopy (DDS). The multilayer was exposed to ultraviolet radiations (filtered at 270 nm) for 7 days, in air. The complexity of the multilayer thermograms recorded by DSC and DDS has required the study of each film constituting the multilayer to assess each the contribution of each one of them. A deterioration in mechanical properties and a decrease in UV transmission for low wavelengths are observed. These evolutions seem to result to the photo-oxidation of the poly(ethylene terephthalate) film mainly localized at the exposed layer. This layer acts as a UV protection filter for the other layers. However, the DDS analyses show a plasticization effect of the primary mode in the Polyamide 6, which is evidence of photo-oxidation.

Item Type:Article
Additional Information:Thanks to Wiley Periodicals editor. The definitive version is available at http://onlinelibrary.wiley.com/ The original PDF of the article can be found at Journal of Applied Polymer Science website :http://dx.doi.org/10.1002/app.38747
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National d'Études Spatiales - CNES (FRANCE)
French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT (FRANCE)
French research institutions > Office National d'Etudes et Recherches Aérospatiales - ONERA (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UPS (FRANCE)
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Deposited By: cirimat webmestre
Deposited On:26 Sep 2013 09:28

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