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Article Dans Une Revue Journal of Applied Polymer Science Année : 2018

Monitoring of the discoloration on c-irradiated PE and EVA films to evaluate antioxidant stability

Sylvain Marque
Didier Gigmes
Samuel Dorey

Résumé

γ‐Irradiated films could provoke unexpected interaction with proteins for instance just after irradiation and not necessarily after 12 months indicating there is no more reactive species. The optical properties of two multilayer films [polyethylene (PE)/ethylene vinyl alcohol (EVOH)/PE and ethylene vinyl acetate (EVA)/EVOH/EVA] after different γ‐irradiation doses is then studied in this work. The investigation on these films, either non‐irradiated or γ‐irradiated (up to 270 kGy), is performed by colorimetry measurement over time (up to 12 months) to assess the generation of new species inside the materials. The color change is directly correlated with absorbed γ‐doses. Over time, the color decreases and goes back to its initial time level. This discoloration evolution could be therefore used as an indication of the completion of the generated species reactions induced by γ‐irradiation.

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Polymères
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Dates et versions

hal-01764643 , version 1 (13-04-2018)

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Fanny Gaston, Nathalie Dupuy, Sylvain Marque, Didier Gigmes, Samuel Dorey. Monitoring of the discoloration on c-irradiated PE and EVA films to evaluate antioxidant stability. Journal of Applied Polymer Science, 2018, 135 (18), pp.46114. ⟨10.1002/app.46114⟩. ⟨hal-01764643⟩
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