All ‘green’ composites comprising flax fibres and humins' resins

The use of all “green” composite materials is a great environmental option for several applications such as construction or automotive. A new type of all green composites has been prepared by compression moulding flax fibres with humins as the matrix. Humins are macromolecular heterogeneous furanic...

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Vydáno v:Composites science and technology Ročník 171; s. 70 - 77
Hlavní autoři: Sangregorio, Anna, Guigo, Nathanael, van der Waal, Jan C., Sbirrazzuoli, Nicolas
Médium: Journal Article
Jazyk:angličtina
Vydáno: Barking Elsevier Ltd 08.02.2019
Elsevier BV
Elsevier
Témata:
Automobile industry
Automotive engineering
Biocomposites
Chemical Sciences
Composite materials
Crosslinking
Curing
Curing (B)
Dynamic mechanical analysis
Fibers
Fibres (A)
Flax
Fracture surfaces
Material chemistry
Mechanical properties
Morphology
Polymer matrix composites
Pressure molding
Refining
Scanning electron microscopy
Scanning electron microscopy (D)
Tensile properties
Tensile strength
Tensile tests
Thermomechanical properties (B)
Thermosetting resins
Water absorption
Curing (B)
Scanning electron microscopy (D)
Fibres (A)
Thermomechanical properties (B)
Biocomposites
ISSN:0266-3538, 1879-1050
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Popis
Shrnutí:The use of all “green” composite materials is a great environmental option for several applications such as construction or automotive. A new type of all green composites has been prepared by compression moulding flax fibres with humins as the matrix. Humins are macromolecular heterogeneous furanic co-products from biorefinery operations. For the first time the potential of humins as a whole thermoset-like matrix in combination with natural fibres was studied. The raw industrial humins were cross-linked with and without catalyst. The effect of the process conditions on the final properties of the composites was studied. Good tensile properties were measured by tensile test and Dynamic Mechanical Analysis. Observations of the fracture surface were done by Scanning Electron Microscope, revealing a void-free morphology. The study finally focused on the water absorption behaviour, underlining the more hydrophobic nature of the humins' composites compared to the raw flax mat. The good adhesion between the fibre and the matrix was underlined. Humins interacts with the hydrophilic fibres thus creating a good interphase, leading to improved properties. The study demonstrated the possibility of using a biorefinery co-product as a thermoset matrix for preparing composites materials.
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ISSN:0266-3538
1879-1050
DOI:10.1016/j.compscitech.2018.12.008