Dry Sliding Wear Behavior of Chemically Treated Sisal Fiber Reinforced Epoxy Composites

Behera, Sudhakar; Gautam, Rakesh Kumar; Mohan, S.; Chattopadhyay, Arghya

doi:10.1080/15440478.2021.1904483

Cited by 23 publications

(16 citation statements)

References 35 publications

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“…This may have enhanced the interlocking or interfacial adhesion between the treated hemp fiber and the epoxy matrix by increasing the hemp fiber's interacting area with the matrix. [ 34,79,80 ] Figures 10 and 11 also revealed that the maximum wear resistance was shown by PT HFREC, followed by ST HFREC and UT HFREC.…”

Section: Resultsmentioning

confidence: 90%

Hemp fiber surface modification: Its effect on mechanical and tribological properties of hemp fiber reinforced epoxy composites

et al. 2021

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In this research work, the effects of sodium carbonate and hydrogen peroxide treatment of hemp fiber on the water absorption, mechanical, and tribological properties of hemp fiber reinforced epoxy composites (HFREC) were investigated. The change in surface roughness and fiber size after chemical treatment was confirmed by the scanning electron microscopy (SEM) images. Fourier transform infrared analysis confirmed the removal of hemicellulose and lignin content of the fiber after both the chemical treatment. X-ray diffraction analysis showed an increase in the crystallinity index of the chemically treated fiber.The experimental results also revealed that both sodium carbonate and peroxide modification have resulted in enhancement of water resistance and mechanical properties such as tensile strength and tensile modulus and reduction in impact properties of treated HFREC. Tribological test results revealed that the treated HFREC have improved wear and frictional properties in comparison with untreated HFREC. The best tribological and mechanical properties were exhibited by peroxide treated HFREC, which was also confirmed through the SEM images of worn and fractured surfaces of the composites.

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Section: Resultsmentioning

confidence: 90%

Hemp fiber surface modification: Its effect on mechanical and tribological properties of hemp fiber reinforced epoxy composites

et al. 2021

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“…Moreover, the tribological investigations of the green fiberreinforced composites have been emphasized. [12][13][14] In addition, limited studies in the literature have addressed the challenges in manufacturing natural fiberreinforced composites. [15] However, few researchers have conducted systematic investigations for evaluating the agro-waste cellulosic fibers in Jordan.…”

Section: Introductionmentioning

confidence: 99%

Tribological and mechanical fracture performance of Mediterranean lignocellulosic fiber reinforced polypropylene composites

2021

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Natural fiber-reinforced polymeric composites are considered one of the newest materials in the industry. Ecological concerns have led to a growing need of using ecofriendly materials. This work aimed to study the dynamic and quasi-static performance as well as tribological characteristics of Mediterranean lignocellulosic fiber-reinforced polypropylene composites. Various types of Jordanian lignocellulosic fibers were utilized in the study, namely, hay, lemon, palm, and reed. Composites with various reinforcement structures were designed, prepared, and utilized for the investigations. Wear performance and coefficient of friction as well as various mechanical performance characteristics including tensile strength, tensile modulus, elongation to break, and impact strength were performed. Results have demonstrated that composites have led to different significant characteristics. The hay/polypropylene composites were revealed to have good mechanical performance enhancements. Their maximum value of the tensile modulus was 1557.2 MPa in the case of 30 wt% fiber content. It was also demonstrated that their maximum value of toughness was about 1031 kJ/m 3 in the case of 20 wt% fiber content. However, the increase of fiber loading more than 20 wt% was found to make negative effects on the toughness characteristics. Moreover, it was found that most of the considered Jordanian lignocellulosic fibers were capable of enhancing most of the mechanical performance characteristics of the composites, particularly, the stiffness property. The coefficient of friction was also found variable with fiber loading as well as fiber type. The maximum coefficient of friction value was for the composites with 30 wt% hay, while the lowest was found for composites that contained palm and reed at 10 wt%. The work had demonstrated that the features of Jordanian natural fibers were potential and competitive regarding their elasticity, toughness, interfacial adhesive potency, accessibility, and polypropylene compatibility due to their desired intrinsic mechanical characteristics. This would contribute to the finding of low-cost environmentally friendly materials for various bio-product applications with reliable

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“…Swain and Biswas 13 noticed appreciable improvement in fiber-matrix adhesion due to the combination of alkali and benzoyl chloride treatment of jute fiber. Behera et al 14 investigated the influence of alkali, glutamic acid, and combination of alkali and glutamic acid treatment on sisal fiber and sisal fiber reinforced epoxy composites. They observed that all the treated composites showed improvement in microhardness values and wear resistance in comparison to untreated composites.…”

Section: Introductionmentioning

confidence: 99%

Polylactic acid and polyhydroxybutyrate coating on hemp fiber: Its effect on hemp fiber reinforced epoxy composites performance

Behera

Gautam²,

Mohan³

2022

Journal of Composite Materials

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The present research work investigated the influence of biodegradable polymer coatings of hemp fiber on the structural, water absorption, mechanical and tribological properties of hemp fiber and hemp fiber reinforced epoxy composites (HFREC). Hemp fibers were initially treated with sodium hydrogen carbonate and then coated with biodegradable polymers like polyhydroxybutyrate (PHB) and polylactic acid (PLA). SEM images of the coated fibers showed a visible change in fiber surface and improvement in surface roughness, while; XRD analysis indicated the improvement in crystallinity of the coated fibers resulting in enhanced interfacial adhesion between the coated fibers and the epoxy matrix. The experimental results also revealed that both PHB and PLA coatings of the fibers have resulted in improvement of water resistance and mechanical properties such as tensile strength, modulus and impact strength of coated HFREC. Tribological test results also revealed that the coated HFREC have improved wear and frictional properties in comparison to uncoated HFREC. The best tribological and mechanical properties were exhibited by PLA coated HFREC, which was also confirmed through the SEM images of worn and fractured surfaces of the uncoated and coated hemp fiber composites.

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Dry Sliding Wear Behavior of Chemically Treated Sisal Fiber Reinforced Epoxy Composites

Cited by 23 publications

References 35 publications

Hemp fiber surface modification: Its effect on mechanical and tribological properties of hemp fiber reinforced epoxy composites

Hemp fiber surface modification: Its effect on mechanical and tribological properties of hemp fiber reinforced epoxy composites

Tribological and mechanical fracture performance of Mediterranean lignocellulosic fiber reinforced polypropylene composites

Polylactic acid and polyhydroxybutyrate coating on hemp fiber: Its effect on hemp fiber reinforced epoxy composites performance

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