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Article Dans Une Revue Composites Part A: Applied Science and Manufacturing Année : 2023

Silazanes, a novel flax fibers functionalization: Effect on silicone-based composites

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The natural fibers use as reinforcement for composites is a topical subject. Usually, chemical functionalization is used in order to improve the compatibility between natural fibers and polymer matrices, for cross-linkable systems, the grafting agent used for fiber modification can also participate in the three-dimensional network formation and therefore improve the composite mechanical properties. In this study, a silazane: 1,3-divinyltetramethyldisilazane (DVTS) was used for the first time as a flax fibers modification to introduce at their surface vinyl groups, via covalent bonds, that can react during the polysiloxane system cross-linking. The reaction conditions for the flax functionalization were investigated, especially the alkaline pre-treatment impact of the fibers before grafting and the nature of solvent used during the reaction. Scanning electron microscope (SEM) analyses shown a high interfacial adhesion functionalized fibers/matrix.
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Antoine Ishak, Rodolphe Sonnier, Belkacem Otazaghine, Claire Longuet. Silazanes, a novel flax fibers functionalization: Effect on silicone-based composites. Composites Part A: Applied Science and Manufacturing, 2023, 166, pp.107382. ⟨10.1016/j.compositesa.2022.107382⟩. ⟨hal-03917840⟩
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