An overview: Natural fiber reinforced hybrid composites, chemical treatments and application areas

Karthi, N.; Kumaresan, K.; Sathish, S.; Gokulkumar, S.; Prabhu, L.; Vigneshkumar, N.

doi:10.1016/j.matpr.2020.01.011

Cited by 151 publications

(78 citation statements)

References 29 publications

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“…Herein, is worth mentioning that the surface condition of a hydrophilic natural fiber plays an important role in its adhesion to a hydrophobic polymer matrix. To improve this surface adhesion several treatments using alkali, silane, acetylation, radiation among others, have been investigated [ 5 , 42 , 43 , 44 , 45 ]. In particular, Battegazzore et al [ 46 , 47 ] proposed a layer-by-layer nanoengineered technique to modify the surface of natural fibers and produce interphases capable of improving mechanical properties of polymer composites.…”

Section: Resultsmentioning

confidence: 99%

Tucum Fiber from Amazon Astrocaryum vulgare Palm Tree: Novel Reinforcement for Polymer Composites

et al. 2020

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The replacement of synthetic fibers by natural fibers has, in recent decades, been the subject of intense research, particularly as reinforcement of composites. In this work, the lesser known tucum fiber, extracted from the leaves of the Amazon Astrocaryum vulgare palm tree, is investigated as a possible novel reinforcement of epoxy composites. The tucum fiber was characterized by pullout test for interfacial adhesion with epoxy matrix. The fiber presented a critical length of 6.30 mm, with interfacial shear strength of 2.73 MPa. Composites prepared with different volume fractions of 20 and 40% tucum fiber were characterized by tensile and Izod impact tests, as well as by ballistic impact energy absorption using .22 ammunition. A cost analysis compared the tucum fiber epoxy composites with other natural and synthetic fiber reinforced epoxy composites. The results showed that 40 vol% tucum fiber epoxy composites increased the tensile strength by 104% and the absorbed Izod impact energy by 157% in comparison to the plain epoxy, while the ballistic performance of the 20 vol% tucum fiber composites increased 150%. These results confirmed for the first time a reinforcement effect of the tucum fiber to polymer composites. Moreover, these composites exhibit superior cost effectiveness, taking into account a comparison made with others epoxy polymer composites.

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Section: Resultsmentioning

confidence: 99%

Tucum Fiber from Amazon Astrocaryum vulgare Palm Tree: Novel Reinforcement for Polymer Composites

et al. 2020

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“…However, with the world’s population increase, which is demanding sustainable actions to prevent pollution and shortage of non-renewable resources, the replacement of synthetic materials by natural ones becomes an issue to be seriously considered. In this context, the trend of replacing synthetic fibers by natural fibers has expanded in several industrial sectors [ 7 , 8 , 9 , 10 , 11 ]. This trend is justified by desirable characteristics of natural fibers, such as abundance, recyclability, biodegradability, and bio-renewability [ 9 , 12 , 13 ].…”

Section: The Birth Of a Novel Class Of Composite Materialsmentioning

confidence: 99%

“…To improve the interfacial adhesion between the natural fibers and the polymeric matrix, several treatments are being extensively investigated. Among these, alkali, silane, benzoyl, acetylation, acrylation, radiation, permanganate, peroxide, and sodium chlorite have been proposed [ 8 , 9 , 38 , 39 ]. A recent review of the effect of these different chemical treatments on the properties of natural fiber composites was presented by Godara [ 38 ].…”

Section: The Birth Of a Novel Class Of Composite Materialsmentioning

confidence: 99%

Graphene-Incorporated Natural Fiber Polymer Composites: A First Overview

et al. 2020

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A novel class of graphene-based materials incorporated into natural lignocellulosic fiber (NLF) polymer composites is surging since 2011. The present overview is the first attempt to compile achievements regarding this novel class of composites both in terms of technical and scientific researches as well as development of innovative products. A brief description of the graphene nature and its recent isolation from graphite is initially presented together with the processing of its main derivatives. In particular, graphene-based materials, such as nanographene (NG), exfoliated graphene/graphite nanoplatelet (GNP), graphene oxide (GO) and reduced graphene oxide (rGO), as well as other carbon-based nanomaterials, such as carbon nanotube (CNT), are effectively being incorporated into NLF composites. Their disclosed superior mechanical, thermal, electrical, and ballistic properties are discussed in specific publications. Interfacial shear strength of 575 MPa and tensile strength of 379 MPa were attained in 1 wt % GO-jute fiber and 0.75 wt % jute fiber, respectively, epoxy composites. Moreover, a Young’s modulus of 44.4 GPa was reported for 0.75 wt % GO-jute fiber composite. An important point of interest concerning this incorporation is the fact that the amphiphilic character of graphene allows a better way to enhance the interfacial adhesion between hydrophilic NLF and hydrophobic polymer matrix. As indicated in this overview, two basic incorporation strategies have so far been adopted. In the first, NG, GNP, GO, rGO and CNT are used as hybrid filler together with NLF to reinforce polymer composites. The second one starts with GO or rGO as a coating to functionalize molecular bonding with NLF, which is then added into a polymeric matrix. Both strategies are contributing to develop innovative products for energy storage, drug release, biosensor, functional electronic clothes, medical implants, and armor for ballistic protection. As such, this first overview intends to provide a critical assessment of a surging class of composite materials and unveil successful development associated with graphene incorporated NLF polymer composites.

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“…The characteristics of hybrid LNFC depend on the failure strain of each fiber type considered, fiber orientation, fiber volume fraction, fiber length, fiber/matrix adhesion, fiber layup [139]. The highest properties can be reached once the strains of both hybridized fibers are notably compatible, property results [140].…”

Section: Hybridmentioning

confidence: 99%

Recent Developments in Luffa Natural Fiber Composites: Review

et al. 2020

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Natural fiber composites (NFCs) are an evolving area in polymer sciences. Fibers extracted from natural sources hold a wide set of advantages such as negligible cost, significant mechanical characteristics, low density, high strength-to-weight ratio, environmental friendliness, recyclability, etc. Luffa cylindrica, also termed luffa gourd or luffa sponge, is a natural fiber that has a solid potential to replace synthetic fibers in composite materials in diverse applications like vibration isolation, sound absorption, packaging, etc. Recently, many researches have involved luffa fibers as a reinforcement in the development of NFC, aiming to investigate their performance in selected matrices as well as the behavior of the end NFC. This paper presents a review on recent developments in luffa natural fiber composites. Physical, morphological, mechanical, thermal, electrical, and acoustic properties of luffa NFCs are investigated, categorized, and compared, taking into consideration selected matrices as well as the size, volume fraction, and treatments of fibers. Although luffa natural fiber composites have revealed promising properties, the addition of these natural fibers increases water absorption. Moreover, chemical treatments with different agents such as sodium hydroxide (NaOH) and benzoyl can remarkably enhance the surface area of luffa fibers, remove undesirable impurities, and reduce water uptake, thereby improving their overall characteristics. Hybridization of luffa NFC with other natural or synthetic fibers, e.g., glass, carbon, ceramic, flax, jute, etc., can enhance the properties of the end composite material. However, luffa fibers have exhibited a profuse compatibility with epoxy matrix.

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An overview: Natural fiber reinforced hybrid composites, chemical treatments and application areas

Cited by 151 publications

References 29 publications

Tucum Fiber from Amazon Astrocaryum vulgare Palm Tree: Novel Reinforcement for Polymer Composites

Tucum Fiber from Amazon Astrocaryum vulgare Palm Tree: Novel Reinforcement for Polymer Composites

Graphene-Incorporated Natural Fiber Polymer Composites: A First Overview

Recent Developments in Luffa Natural Fiber Composites: Review

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