Mechanical Properties of Natural Fiber Composites

Bourhis, E. Le; Touchard, Fabienne

doi:10.1016/b978-0-12-819724-0.00009-4

Cited by 7 publications

(3 citation statements)

References 61 publications

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“…In the context of current environmental concerns, biocomposites stand out due to their low carbon footprint as well as their non-hazardous and cheap solutions. Moreover, some intrinsic properties of these materials such as non-abrasiveness and fatigue resistance are remarkable [ 8 , 9 , 10 ]. However synthetic fiber composites are often superior for their absolute mechanical performance and their low water sensitivity [ 11 , 12 ].…”

Section: Introductionmentioning

confidence: 99%

Effect of Hygrothermal Ageing on the Mechanical and Fire Properties of a Flame Retardant Flax Fiber/Epoxy Composite

Campana¹,

Léger²,

Sonnier³

et al. 2022

Polymers

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In engineering applications, natural fiber composites must comply with fire requirements including the use of flame retardant. Furthermore, biocomposites are known to be water sensitive. Whether flame retardants affect the water sensitivity and whether water absorption affects the fire behavior and the mechanical performance of biocomposites are the two main topics addressed in this work. In this study, a flax fiber/epoxy composite flame retardant with 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO) or aluminum diethyl phosphinate (AlPi) was aged in humid atmosphere or by immersion in water. Water absorption kinetics revealed that DOPO induces an increase in equilibrium water content by approximately a factor of 2 due to its intrinsic hygroscopicity and/or its plasticizing effect on the epoxy matrix. In contrast, AlPi does not significantly change the water sensitivity of the biocomposite. Mechanical testing highlighted that, whatever the FR, the evolution of mechanical properties with ageing is governed by the moisture content. The drop of elastic modulus was attributed to a decrease in fiber rigidity due to plasticization, while the increase in tensile strength was assigned to an increase in fiber/matrix friction due to fiber swelling. As regards flame retardancy, only the highest water contents modified the fire behavior. For the AlPi containing biocomposite, the water release resulted in an increase by 50% of the time to ignition, while for the DOPO flame retardant biocomposite the water release was mainly postponed after ignition.

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Section: Introductionmentioning

confidence: 99%

Effect of Hygrothermal Ageing on the Mechanical and Fire Properties of a Flame Retardant Flax Fiber/Epoxy Composite

Campana¹,

Léger²,

Sonnier³

et al. 2022

Polymers

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“…[7][8][9][10] They can be used in various application fields, including infrastructure and transportation, and offer advantages over synthetic composites. 11 Engineers and scientists are increasingly interested in the use of natural fibers like jute, animal silk, palm, luffa, pineapple leaves, and wood because of their advantages, including low density, high strength and stiffness, and versatility, 12 less energy requirement for the manufacturing of these fibers, 13 less cost compared to synthetic fibers with less manufacturing-related risks, 14 and decrease harmful gas emissions when heated or incinerated at the end of their valuable lives. 15 These natural fibers can be combined with green polymers to create new types of materials.…”

Section: Introductionmentioning

confidence: 99%

Experimental and numerical investigation on the elastic properties of luffa–cenosphere‐reinforced epoxy hybrid composite

Gurjar,

Kulkarni,

Joladarashi

et al. 2024

Polymer Composites

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Estimating the elastic characteristics of natural fiber‐reinforced polymer composites such as luffa fiber reinforced with epoxy is challenging. The structure of luffa cylindrica is complex, like a three‐dimensional natural fibrous mat, netting‐like structure. The multiscale modeling of such structures is the challenge to be addressed. The prime objective of this work is to determine the specific elastic properties of luffa–cenosphere‐reinforced epoxy (LCE) composite, considering the effect of filler volume fractions. Furthermore, multiscale modeling techniques, such as representative volume elements (RVEs) of finite element techniques with chopped, unidirectional, plain, and twill weaving fiber arrangements, were employed. The longitudinal modulus, transverse modulus, shear modulus, and Poisson's ratio were predicted through these modeling approaches. However, experimental and analytical methodologies, including the rule of mixture and Halpin–Tsai, were considered to validate the finite element analysis results. The elastic characteristics of LCE composite were therefore shown to be enhanced by increasing filler volume fraction. However, the cenosphere's 20% volume fraction has the highest elastic properties as determined by analytical, experimental, and computational models. Analytical and finite element simulation results were compared with the experimental results, and based on the findings, the most suitable (unidirectional, chopped, plain, and twill weaving) RVE was identified for finite element modeling of LCE composite for the evaluation of elastic properties. Results from practical approaches and the RVE twill weaving model showed good agreement, with less than 1% error, compared to the other analytical and finite element methods.Highlights NFCs are gaining ground in polymer composites. Overcoming challenges in modeling of luffa fiber inside epoxy matrix. The study uses multiscale modeling with diverse fiber arrangements. Experimental and analytical methods used to confirm FEA results. Increased cenosphere volume fraction boosts LCE composite properties.

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“…Matrix generally works with exchanging stress between reinforced fibers and protects them from outside harm. On the other hand, reinforcement improves hydrophobicity, durability, wettability, firmness of the composites, and their various strengths (Joseph et al, 1996;Chandramohan & Marimuthu, 2011;Lau et al, 2018;Sarikaya et al, 2019;Huang & Young, 2019;Espinach et al, 2017;Jeyapragash et al, 2020;Jariwala & Jain, 2019;Le Bourhis & Touchard, 2021;Dasore et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

Injection-molded natural fiber-reinforced polymer composites–a review

Rabbi

Islam

2021

Int J Mech Mater Eng

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For the last couple of decades, researchers have been trying to explore eco-friendly materials which would significantly reduce the dependency on synthetic fibers and their composites. Natural fiber-based composites possess several excellent properties. They are biodegradable, non-abrasive, low cost, and lower density, which led to the growing interest in using these materials in industrial applications. However, the properties of composite materials depend on the chemical treatment of the fiber, matrix combination, and fabrication process. This study gives a bibliographic review on bio-composites specially fabricated by the injection-molding method. Technical information of injection-molded natural fiber reinforcement-based composites, especially their type and compounding process prior to molding, are discussed. A wide variety of injection-molding machines was used by the researchers for the composite manufacturing. Injection-molded composites contain natural fiber, including hemp, jute, sisal, flax, abaca, rice husk, kenaf, bamboo, and some miscellaneous kinds of fibers, are considered in this study.

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Mechanical Properties of Natural Fiber Composites

Cited by 7 publications

References 61 publications

Effect of Hygrothermal Ageing on the Mechanical and Fire Properties of a Flame Retardant Flax Fiber/Epoxy Composite

Effect of Hygrothermal Ageing on the Mechanical and Fire Properties of a Flame Retardant Flax Fiber/Epoxy Composite

Experimental and numerical investigation on the elastic properties of luffa–cenosphere‐reinforced epoxy hybrid composite

Injection-molded natural fiber-reinforced polymer composites–a review

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