Compressive and tensile behaviour of unidirectional composites reinforced by natural fibres: Influence of fibres (flax and jute), matrix and fibre volume fraction

Baley, Christophe; Lan, Marine; Bourmaud, Alain; Duigou, Antoine Le

doi:10.1016/j.mtcomm.2018.07.003

Cited by 56 publications

(25 citation statements)

References 38 publications

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“…GPa (P ≤ 0.001). Baley et al [37] found a tensile modulus of 26 ± 2 GPa for a unidirectional flax-epoxy composite with FlaxTape as flax material and a similar fiber volume fraction, which is in line with the measured tensile modulus of the FT-epoxy composite in this study.…”

Section: Tensile Properties Of Compositessupporting

confidence: 90%

Effect of enzymatic treatment of flax on fineness of fibers and mechanical performance of composites

Prez¹,

Vuure

Ivens

et al. 2019

Composites Part A: Applied Science and Manufacturing

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The application of enzymes as alternative to dew retting of flax was studied in correlation to the characteristics of composites reinforced with these natural fibers. Fiber fineness and mechanical properties of biocomposites were evaluated. Furthermore, moisture absorption by biocomposites was studied and fracture surfaces were investigated using Scanning Electron Microscopy. Compared to dew retted fiber composites, improvements in mechanical performance can be observed for composites impregnated with fibers extracted after enzymatic treatments. All enzymatic treatments resulted in finer fibers than green fibers and led to biocomposites with a reduced equilibrium moisture content and lower diffusion coefficient. This study illustrates the high potential of enzymatic retting, in particular with polygalacturonase. Also, the manual extraction procedure used, produced fibers with an E-modulus up to 84 GPa and strength up to 800 MPa, likely due to reduced fiber damage, which illustrates the hidden potential of flax fibers.

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Section: Tensile Properties Of Compositessupporting

confidence: 90%

Effect of enzymatic treatment of flax on fineness of fibers and mechanical performance of composites

Prez¹,

Vuure

Ivens

et al. 2019

Composites Part A: Applied Science and Manufacturing

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“…La compré hension du comportement impose aussi de tenir compte des nombreuses interfaces pré sentes dans une fibre [48] c'est-à -dire né cessite une approche multié chelles. Dans le cas d'un pli unidirectionnel, la non-liné arité de comportement des fibres é lé mentaires, leur gé omé trie (renfort discontinu), la pré sence de faisceaux et les mé canismes d'endommagement à diffé rentes é chelles expliquent, entre autres, sa ré action non-liné aire en traction [24] et en compression [49][50].…”

Section: Autres Verrousunclassified

What Obstacles Need to Be Overcome in Order to Optimize Performance and Develop Spplications for Biocomposites?

Baley¹

2019

RCMA

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In the domain of composite materials with an organic matrix, the use of natural fibres is increasing. These materials are named here biocomposites. This type of reinforcement has specific properties such as a renewable origin, modest lengths depending on the variety, an assembly in the form of cohesive bundles within the plants, a complex composition and internal organisation near of a composite material. An elementary fibre is a laminate of walls and layers reinforced with cellulose fibrils oriented mainly in a direction called microfibrillar angle. Compared to synthetic fibres, "fibre manufacturing" is very different because it takes place during the growth of plants. Thus, many sectors are involved in the production cycle of a biocomposite structure such as: Agriculture, scutching, combing, textiles, polymers and composite manufacture. Based on their features, this article presents bottlenecks to be lifted to allow large-scale use of biocomposites. RÉSUMÉ : Dans le domaine des maté riaux composites à matrice organique, l'usage des fibres vé gé tales comme renfort se dé veloppe. Ces maté riaux sont ici nommé s biocomposites. Ce type de renfort pré sente des spé cificité s telles qu'une origine renouvelable, des longueurs modestes qui dé pendent de la varié té , un assemblage sous forme de faisceaux cohé sifs au sein des plantes, une composition et une organisation interne complexes. Une fibre est un empilement de parois et de couches renforcé es par des fibrilles de cellulose orienté es principalement dans une direction nommé angle microfibrillaire. Comparé aux fibres de synthè se, la « fabrication des fibres » est trè s diffé rente puisqu'elle se ré alise lors de leur croissance des plantes. Ainsi de nombreux secteurs interviennent dans le cycle de production d'une structure en biocomposites tels que : agriculture, teillage, textile, polymè re et plasturgie. À partir de ces particularité s, cet article pré sente des verrous à lever pour permettre une utilisation à grande é chelle des biocomposites.

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“…Volume fraction or concentration of fiber in composites is also a decisive factor in influencing the properties of developed composites. Baley et al reinforced unidirectional jute and flax fiber mats in polypropylene and concluded that composite fabricated by 60% volume fraction of fiber achieved the highest tensile and compression strength. Ochi concluded that incorporation of 70% volume fraction of unidirectional kenaf fiber in PLA resin improved the tensile and flexural properties of developed composites.…”

Section: Introductionmentioning

confidence: 99%

Static and dynamic mechanical analysis of geometrically different kenaf/PLA green composite laminates

Manral

Bajpai

2019

Polymer Composites

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The type of reinforcement used in polymer composite is one of the main governing parameters to ascertain the performance of a polymer composite. Green composites using fiber mat as reinforcement have shown promising results. In the present study, three different types of kenaf fiber mat (ie, bidirectional, unidirectional, and randomly oriented) have been incorporated with polylactic acid (PLA) for fabrication of green composite laminates through compression molding. Static mechanical characterization (tensile, flexural, and impact) of the developed composites has shown that type of fiber mat affects the mechanical performance of laminated composites markedly. Unidirectional fiber reinforced PLA composite has shown the highest tensile strength in comparison to bidirectional fiber reinforced PLA composite (BDFRPC) and randomly oriented fiber reinforced PLA composite (ROFRPC). BDFRPC has shown better flexural properties whereas ROFRPC achieved higher impact strength. Dynamic mechanical analysis of different kenaf/ PLA laminates was performed to investigate the visco-elastic nature with respect to temperature. Results show that ROFRPC has observed the best results under dynamic loading condition. The morphological study of the fractured surfaces during various testing was performed using scanning electron microscope to investigate mechanisms and reasons of failure of composites. K E Y W O R D Sdynamic mechanical analysis, green composite, kenaf fiber mats, mechanical characterization, polylactic acid

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Compressive and tensile behaviour of unidirectional composites reinforced by natural fibres: Influence of fibres (flax and jute), matrix and fibre volume fraction

Cited by 56 publications

References 38 publications

Effect of enzymatic treatment of flax on fineness of fibers and mechanical performance of composites

Effect of enzymatic treatment of flax on fineness of fibers and mechanical performance of composites

What Obstacles Need to Be Overcome in Order to Optimize Performance and Develop Spplications for Biocomposites?

Static and dynamic mechanical analysis of geometrically different kenaf/PLA green composite laminates

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