Improving the flame retardancy of flax fabrics by radiation grafting of phosphorus compounds

Sonnier Rodolphe, Otazaghine Belkacem, Viretto Amandine, Apolinario Guilherme, Ienny Patrick. 2015. Improving the flame retardancy of flax fabrics by radiation grafting of phosphorus compounds. European Polymer Journal, 68 : 313-325.

Quartile : Q1, Sujet : POLYMER SCIENCE

Résumé : Two phosphorus-based molecules were grafted onto flax fibers through electron beam irradiation in order to impart flame retardancy to flax fabrics. Fabrics were impregnated by dipping them into a solution containing a phosphonated monomer: dimethyl(methacryloxy)methyl phosphonate (MAPC1) or dimethylvinyl phosphonate (MVP). Then fabrics were irradiated at a dose ranging between 10 and 100 kGy. The grafting efficiency was found to be dependent on the molecule concentration in the impregnation solution, on the radiation dose and on the nature of the monomer. In particular, it has been observed that MAPC1 is grafted only onto the surface while MVP is also grafted into the bulk leading to high phosphorus content (4 wt%). Flame retardancy of the modified flax fibers, fabrics and polyester thermoset composites containing these fabrics were also investigated. High phosphorus content allows fabrics to achieve self-extinguishing behavior. The flammability of composites in cone calorimeter test is also reduced, even if the thermoset is not flame retarded itself.

Mots-clés Agrovoc : retardant, greffage, lin, phosphore, irradiation, Immersion, étoffe

Mots-clés libres : Electron beam, Radiation grafting, Flax fibers, Phosphorus, Flame retardancy

Auteurs et affiliations

• Sonnier Rodolphe, Ecole des mines d'Alès (FRA) - auteur correspondant
• Otazaghine Belkacem, Ecole des mines d'Alès (FRA)
• Viretto Amandine, Ecole des mines d'Alès (FRA)
• Apolinario Guilherme, Ecole des mines d'Alès (FRA)
• Ienny Patrick, Ecole des mines d'Alès (FRA)

Source : Cirad-Agritrop (https://agritrop.cirad.fr/605186/)

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