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oai:recercat.cat:10256/195982024-06-18T12:06:19Zcom_2072_452955com_2072_2054col_2072_453062

2024-06-18T12:06:19Z urn:hdl:10256/19598 Valorization of Date Palm Waste for Plastic Reinforcement: Macro and Micromechanics of Flexural Strength Belgacem, Chihaoui Serra Parareda, Ferran Tarrés Farrés, Joaquim Agustí Mutjé Pujol, Pere Delgado Aguilar, Marc Boufi, Sami Polipropilè Polypropylene Resistència de materials Strength of materials Palmera de dàtils -- Residus Date palm -- By-products Flexió (Mecànica) Flexure Plàstics reforçats Reinforced plastics Date palm waste is an abundant agricultural residue in Tunisia and can be used for plastic reinforcement. Moreover, its use in plastic composites can help to reduce dependence on fossil resources for material production. In this work, the valorization of date palm residues was studied by employing high-yield processes following mechanical, chemical, and enzymatical treatments. Fibers obtained by soft chemical treatment with sodium hydroxide and enzymatic treatment with xylanases and pectinases were evaluated for their use in the reinforcement of plastic materials. The flexural strength property, truly relevant for structural, construction, automotive, or other market sectors, was adopted to assess the reinforcing potential of the fibers. Polypropylene was effectively reinforced with date palm fibers (60 wt.%), exhibiting a flexural strength increases of 80% (73.1 MPa), 93% (78.5 MPa), and 106% (83.9 MPa) for mechanical, chemical, and enzymatic fibers, respectively. The different treatments had an impact on the chemical composition of the fibers, and by extension on the final properties of the composites. The holocellulose content could provide good interfacial adhesion using a coupling agent, whereas the lignin content improved the dispersion of the phases. Two interesting outcomes were that the flexural performance of enzymatic fibers was like that of wood composites, whereas the specific flexural strength was comparable to that of glass fiber composites. Overall, the present work has shown the potential behind date palm waste in the composite sector when a specific property or application is desired. Novel treatments have been used for greater fiber compatibility, increasing the sustainability of the process, and improving the applicability of the palm residue 2024-06-18T12:06:19Z 2024-06-18T12:06:19Z 2021-05-27 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion peer-reviewed http://hdl.handle.net/10256/19598 info:eu-repo/semantics/altIdentifier/doi/10.3390/polym13111751 info:eu-repo/semantics/altIdentifier/eissn/2073-4360 Attribution 4.0 International http://creativecommons.org/licenses/by/4.0/ info:eu-repo/semantics/openAccess MDPI (Multidisciplinary Digital Publishing Institute) Polymers, 2021, vol. 13, num. 11, p. 1751 Articles publicats (D-EQATA)