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Elaboration et évaluation d'additifs verts pour polymères et composites respectueux de l'environnement

Abstract : This thesis work falls within the identified context of the need to develop new polymers that are more environmentally friendly. We are convinced that the development of these "green" materials requires the use of "green" additives during formulation. To develop environmentally friendly additives capable of stabilizing the polymer, with respect to the life cycle, and paying special attention to biomass valorization, three approaches have been studied. The first is an innovative way of using a mixture of polyphenols from winery by-products and tea industry. The second way is the valorisation of a molecule from the major by-product of the wheat industry. The third is a recent route of innovation, which proposes the use of layered double hydroxides nanocomposites (LDH) functionalized with bio based stabilizers. The evaluation of their stabilizing properties is carried out in polyolefins, against thermo- and photo-oxidation processes. The very promising results of the project highlight the strong potential of bio based molecules and composites to maintain polymers properties under conditions of use.
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Submitted on : Monday, March 12, 2018 - 2:07:07 PM
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Audrey Diouf-Lewis. Elaboration et évaluation d'additifs verts pour polymères et composites respectueux de l'environnement. Matériaux. Université Clermont Auvergne, 2017. Français. ⟨NNT : 2017CLFAC028⟩. ⟨tel-01729189⟩

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