Development and characterization of moringa oleifera fruit waste pod derived particulate cellulosic reinforced epoxy bio-composites for structural applications

Oladele, Isiaka Oluwole; Ogunwande, Gabriel Seun; Taiwo, Samuel Anuoluwapo; Lephuthing, Senzeni Sipho

doi:10.1016/j.heliyon.2022.e09755

Cited by 9 publications

(6 citation statements)

References 31 publications

(33 reference statements)

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“…Figure 8 b shows that the average flexural strength ( σ max ) of NF WJF 30 and NF WJF40 were 37.7 MPa and 39.4 MPa, respectively. The results of flexural strength are similar to those reported in other studies of epoxy bio-composites [ 40 , 41 ]. The bio-composites SH WJF30 and SH WJF40 displayed values of flexural strength of 57.2 MPa and 42.1 MPa, respectively.…”

Section: Resultssupporting

confidence: 89%

Fabrication of Woven Jute Fiber Epoxy Bio-Composites through the Epoxy/Thiol-Ene Photopolymerization Technique

Ortiz¹,

Yáñez‐Macías²,

Herrera³

et al. 2022

Polymers

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An eco-friendly epoxy/thiol-ene photopolymerization (ETEP) process was employed to prepare epoxy bio-composites using a commercial biobased epoxy resin and a woven jute fabric as reinforcement. In this process the components of the thiol-ene system, an allyl-functionalized ditertiary amine curing agent, a multifunctional thiol and a radical photoinitiator, were added to the epoxy resin to produce a polyether–polythioether crosslinked co-network. Moreover, the jute fibers were functionalized with thiol groups using the 3-mercaptopropyl (trimethoxysilane) with the purpose of creating a chemically bonded polymeric matrix/fiber system. The obtained bio-composites prepared with the thiol-functionalized cellulose fibers exhibited an increase up to 52% and 40% in flexural modulus and strength with respect to the non-functionalized counterparts. Under the three-point bending loadings, the composites displayed higher deformation at break and toughness due to the presence of polythioethers in the co-network. The prepared bio-composites developed in this work are excellent candidates to extend the use of cellulose fibers for structural applications.

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Section: Resultssupporting

confidence: 89%

Fabrication of Woven Jute Fiber Epoxy Bio-Composites through the Epoxy/Thiol-Ene Photopolymerization Technique

Ortiz¹,

Yáñez‐Macías²,

Herrera³

et al. 2022

Polymers

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“…The stress–strain curves show reveal that tensile stress has increased when reinforcements are varied as compared to pure epoxy. [ 35 ] Furthermore, the tensile strength of composites is greatly increased by the addition of natural hybrid fibers. [ 36 ] The hybrid composite shows an optimum tensile strength, which can be put to better use.…”

Section: Resultsmentioning

confidence: 99%

“…[ 34 ] Generally, the most significant factors that affect the overall qualities of plant fibers are their structure, microfibrillar angle, cell size, defects, and chemical content. [ 35 ] Furthermore, with the increase in the cellulose content, the strength of the fiber improved. [ 39 ] For better tensile strength, chemical treatment had crucial role by providing compatibility between matrix and reinforcements.…”

Section: Resultsmentioning

confidence: 99%

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Investigation of tensile and flexural properties of habesha moringa‐bamboo fiber reinforced epoxy hybrid composite

et al. 2023

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In the present investigation, moringa oleifera and bamboo fibers extracted from Ethiopia are studied to understand their mechanical properties. Three types of woven composites namely moringa/epoxy, bamboo/epoxy and moringa/bamboo/epoxy (hybrid) are fabricated by maintaining 60 vol% fiber content. Additionally, neat epoxy samples are prepared for comparison. Tensile and flexural properties are investigated in terms of strength and modulus. Tensile test results depict brittle failure for all composites and infer increase in fracture strain of woven composites as compared with neat epoxy. Tensile modulus and strength of woven composites increase in the range of 19%–39% and 18%–281%, respectively as compared with neat ones. Flexural stress–strain profiles of neat epoxy, moringa/epoxy and moringa/bamboo/epoxy composites linear curves until failure indicating brittle mode while bamboo/epoxy composites shows non‐linear stress–strain profiles revealing non‐brittle mode of failure. Flexural properties exhibited by bamboo/epoxy and moringa/bamboo/epoxy reveal comparable properties to each other yet superior than moringa/epoxy and neat epoxy composites mainly attributed to the good bonding of constituents and compatibility. All the woven composites reveal an increase in flexural modulus and strength and are in the range of 31%–96% and 5.79%–51.12%, higher than the neat epoxy. Finally, fractured surfaces of specimens are analyzed using scanning electron microscope to understand the structure property correlations.

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“…Isiaka et al used the pod waste of Moringa oleifera fruit to extract cellulose particulates for reinforcement in epoxy bio-composites. 14 Their investigations concluded that 15 wt.% of cellulose particulates from pod waste of Moringa oleifera fruit reinforcement in epoxy bio-composite maximizes its mechanical properties. The ground dried leaves of Moringa oleifera were used as reinforcement filler in epoxy composite by Kajal et al 15 They adopted the hand layup technique to fabricate the composites and their findings conclude the optimum wt.% of ground dried leaves of Moringa oleifera in the polymer composite as 20 wt.%.…”

Section: Introductionmentioning

confidence: 99%

Effect of alkali-treated Moringa oleifera fruit husk fibre/SiC nanoparticle reinforced polymer composites

Saravanakumar¹,

Karuppuswamy²,

Binoj

2023

Proceedings of the Institution of Mechanical Engineers, Part E:

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Composite industries use natural fibre as a sustainable resource to improve the sustainability and eco-friendliness of polymer composites. The characterization of alkali-treated Moringa oleifera fruit husk fibres (AMOFHFs) reinforced in unsaturated polyester resin matrix with varying weight percent of nano-sized silicon carbide (SiC) particles as filler material is presented in this paper. The AMOFHFs reinforced composite (AMOFHFC) specimens contain 20 wt.% AMOFHFs and nano-sized SiC particles ranging from 1 to 5 wt.% in 1 wt.% steps. The effect of wt.% variation in nano-sized SiC particles on the mechanical, morphological, tribological and water absorption behaviour of AMOFHFC specimens was thoroughly investigated. According to the findings, the AMOFHFC specimen with 4 wt.% nano-sized SiC particles as filler material has the best mechanical, tribological and water absorption properties. The hardness, tensile, flexural and impact strength of the AMOFHFC specimen with 4 wt.% nano-sized SiC particles improved by 14.86%, 23.11%, 9.6% and 23.22% respectively compared to the composite specimen without SiC nanoparticles as filler material. Similarly, the AMOFHFC specimen with 4 wt.% nano-sized SiC particles exhibited a lesser weight loss of 96.7% compared to the composite specimen without SiC nanoparticles as filler material during the Pin-on-disk experimentation which showcases its superior tribological characteristics. Furthermore, SEM images of fractured tensile AMOFHFC specimens aided in understanding the bonding nature of the AMOFHFs, SiC nanoparticles and unsaturated polyester resin matrix in the composite specimens. The findings above led us to the conclusion that AMOFHFCs with acceptable hydrophobic nature are best suited for light weight automotive and structural applications.

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Development and characterization of moringa oleifera fruit waste pod derived particulate cellulosic reinforced epoxy bio-composites for structural applications

Cited by 9 publications

References 31 publications

Fabrication of Woven Jute Fiber Epoxy Bio-Composites through the Epoxy/Thiol-Ene Photopolymerization Technique

Fabrication of Woven Jute Fiber Epoxy Bio-Composites through the Epoxy/Thiol-Ene Photopolymerization Technique

Investigation of tensile and flexural properties of habesha moringa‐bamboo fiber reinforced epoxy hybrid composite

Effect of alkali-treated Moringa oleifera fruit husk fibre/SiC nanoparticle reinforced polymer composites

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