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RESEARCH PRODUCT

Development of bio-based epoxy systems for dry-impregnated vegetables fiber composites implementation

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Prepregs find industrial applications thanks to their high thermomechanical properties and easy implementation. However, they have two major drawback. First, they needto be carried and stored at low temperature. The second drawback is linked to the use of solvent in the future matrix, generating VOCs during thermocompression process. Those two points leads to environmental and economical overcharges resolved by a new dry impregnation process developed by Fibroline company. Those PhD works are reporting the synthesis and formulation of a biobased powder system with a low environmental impact, non-toxic for humans and compatible with dry impregnation for fully bio-based composites implementation. Isoeugenol, a lignin derived molecule, has been used as a precursor for the synthesis of BioIgenox, a fully biobased epoxidic resin. Reticulation of BioIgenox with several anhydrides has been performed, and lead to polyépoxyde with high thermomechanical properties compatible with structural application. A process has been developed in order to modify the oily BioIgenox into a nonsticky powder at room temperature. This powder has been successfully used for fully biobased prepregs implementation dry impregnated.