4.4 Article

Functionalization and Properties of Olive Wood Shell Stone and Its Use in Polyester Biocomposites

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CHEMISTRYSELECT
卷 8, 期 37, 页码 -

出版社

WILEY-V C H VERLAG GMBH
DOI: 10.1002/slct.202300348

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Biomaterials; Composites; Olive stone; Structure-property relations; Thermosets

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This study explores the revalorization of olive wood shell stone as a biocomposite material. The functionalization of the lignocellulosic matrix with different coupling agents improves adhesion with the resin. Various characterization techniques were used to analyze the resulting materials, which demonstrate promising mechanical and thermal properties.
The use of olive wood shell stone (OS) as a revalorized agri-food residue has been investigated for the development of new biocomposites in which a significant amount of the mineral filler is substituted by olive wood stone (APTMS). In addition, we have explored the functionalization of olive stone with different types of coupling agents that are known to improve adhesion between the lignocellulosic matrix and, in our case, unsaturated polyester resin as the most used binder in composite materials. The new functionalized materials have been thoroughly characterized by means of X-ray photoelectron spectroscopy (XPS), Fourier transform infrared (FTIR) spectra (ATR and FTIR-DRIFT), zeta-potential, elemental analysis, XRF, pore size distribution, differential scanning calorimetry (DSC), thermogravimetric (TG), moisture content and particle size distribution. The mechanical and thermal properties of the resulting composites have been evaluated, showing promising results with very good characteristics in flexural strength and heat deflection temperature (HDT), but with lower Barcol hardness and Young's modulus compared to those based on feldspar as an inorganic filler. This study explores the revalorization of olive wood shell stone for biocomposites, replacing mineral filler with functionalized olive wood stone. Various characterization techniques are employed to analyze the resulting materials, which demonstrate promising mechanical and thermal properties in comparison to feldspar-based composites.+image

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