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Assessment of olive pomace wastes as flame retardants

Abstract : Olive pomace (OP) is a lignocellulosic waste from olive oil industry. In order to valorize these wastes as flame retardant (FR) fillers into polymers, OP residues are milled and screened into three different fractions. Two strategies are then investigated. The first one is to modify OP particles by phosphorus molecules using radiation grafting as already done successfully with flax. Nevertheless, pyrolysis combustion flow calorimetry analyses show that the introduction of phosphorus does not promote charring of OP and flame retardancy is not significantly improved whichever the considered fraction. The second strategy is to replace pentaerythritol by OP as char source into well‐known FR systems based on ammonium polyphosphate. The incorporation of such system into ethylene‐vinyl acetate copolymer leads to satisfying FR performances according to cone calorimeter tests. Moreover, the presence of high amount of extractives into OP such as oleic acid does not appear detrimental.
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Submitted on : Monday, May 23, 2022 - 3:59:38 PM
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Elyssa El Kassis, Belkacem Otazaghine, Roland El Hage, Rodolphe Sonnier. Assessment of olive pomace wastes as flame retardants. Journal of Applied Polymer Science, Wiley, 2020, 137 (1), pp.47715-47727. ⟨10.1002/app.47715⟩. ⟨hal-02428226⟩



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