In this work, different naturally occurring phenolic compounds, such as Thymol (Th), Vanillic acid (VA) and Ferulic Acid (FA), have been considered as UV stabilizers against the photo-oxidative degradation of polylactic acid (PLA). Particularly, in order to explore the effectiveness of the naturally occurring stabilizers, thin PLA-based films, containing different amount of the stabilizers, have been formulated and subjected to accelerate UVB exposure. The preliminary characterizations suggest that the all considered stabilizers exert a plasticizing action and the overall crystallinity of the samples is slightly reduced. If the considered stabilizers are added at low concentration, they exert a protection action, but if their content overcome a specific threshold, are able to exert a pronounced pro-degradation action. Overall, in this work, the concentration-dependent anti-/pro- oxidant activity of used naturally occurring phenolic compounds has been accurately investigated and reported.

Dintcheva, N.T., Baiamonte, M. (2018). Natural phenolic compounds: Anti-oxidants or pro-oxidants for biopolyesters?. In AIP Conference Proceedings. American Institute of Physics Inc. [10.1063/1.5045912].

Natural phenolic compounds: Anti-oxidants or pro-oxidants for biopolyesters?

Dintcheva, Nadka T.;BAIAMONTE, Marilena
2018-01-01

Abstract

In this work, different naturally occurring phenolic compounds, such as Thymol (Th), Vanillic acid (VA) and Ferulic Acid (FA), have been considered as UV stabilizers against the photo-oxidative degradation of polylactic acid (PLA). Particularly, in order to explore the effectiveness of the naturally occurring stabilizers, thin PLA-based films, containing different amount of the stabilizers, have been formulated and subjected to accelerate UVB exposure. The preliminary characterizations suggest that the all considered stabilizers exert a plasticizing action and the overall crystallinity of the samples is slightly reduced. If the considered stabilizers are added at low concentration, they exert a protection action, but if their content overcome a specific threshold, are able to exert a pronounced pro-degradation action. Overall, in this work, the concentration-dependent anti-/pro- oxidant activity of used naturally occurring phenolic compounds has been accurately investigated and reported.
2018
978-073541697-0
Dintcheva, N.T., Baiamonte, M. (2018). Natural phenolic compounds: Anti-oxidants or pro-oxidants for biopolyesters?. In AIP Conference Proceedings. American Institute of Physics Inc. [10.1063/1.5045912].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10447/339323
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