Perspective on the mechanical response of pineapple leaf filler/toughened epoxy composites under diverse constraints

Kumar, Rahul; Bhowmik, Sumit; Kumar, Kaushik; Davim, J. Paulo

doi:10.1007/s00289-019-02952-3

Cited by 14 publications

(5 citation statements)

References 31 publications

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“…This happens because filler's effective dispersion and inclusion improve crosslink bonding between matrix and reinforced materials. [ 30 ] Figure 13C showed matrix accumulation with filler pull‐out and filler breakage at the fracture surface, indicating better interfacial bonding between reinforcement and matrix materials. Therefore, up to 7.5% of filler loading analyzed higher thermo‐mechanical properties with minor deformation.…”

Section: Resultsmentioning

confidence: 99%

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Effect of alkaline treatment on physical, mechanical, and thermal characteristics of jute filler reinforced epoxy composites

Mahakur

Bhowmik

Patowari

et al. 2022

Vinyl Additive Technology

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With burgeoning environmental concerns worldwide, using natural fibers/ fillers to produce composites rather than conventional fibers is on the rise. The current work focuses on the physical and thermomechanical characteristics of alkaline-treated jute filler-based epoxy composites. The composites have been prepared with different weight fraction of jute fillers (0%, 2.5%, 5%, 7.5%, 10%, and 12.5%) using hand layup process. The X-ray diffraction and Fourier transform infrared spectroscopy analysis observed that the alkali treatment of jute fillers improved the crystallinity and molecular structure, enhancing the interfacial and molecular bond between fillers and matrix. The mechanical characterizations of developed composites analyzed that the inclusion of treated jute fillers strengthened the tensile and flexural properties. The 5% filler-based composites have demonstrated maximum tensile strength (54.06 MPa) and modulus (3.12 GPa) with maximum flexural strength (67.55 MPa) and modulus (3.90 GPa). The viscoelastic characteristics of composites revealed that the 7.5% filler-based composite has the highest storage modulus (3.75 GPa), loss modulus (0.496 GPa), and glass transition temperature (91 C) due to greater interfacial interactions of molecules. The weight loss and degradation of composites analyzed with thermogravimetric analysis, and observed better thermal stability with treated jute fillers. The morphological analysis at fracture surfaces analyzed the brittle catastrophic failure of composites. Therefore, the finding produced better specific strength and stiffness with greater thermal stability for electronics equipment, packaging, and transportation.

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Section: Resultsmentioning

confidence: 99%

“…After 12 h, the samples are separated from the molds. [ 30 ] Table 1 shows the sample code for jute filler reinforced composite with the weight percentage of jute particulate and epoxy resin material.…”

Section: Methodsmentioning

confidence: 99%

Effect of alkaline treatment on physical, mechanical, and thermal characteristics of jute filler reinforced epoxy composites

Mahakur

Bhowmik

Patowari

et al. 2022

Vinyl Additive Technology

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“…34,35 A threepoints flexural test was performed according to ASTM Standard D 790-10. 36,37 A Zwick R5LB041 digital Shore hardness tester (Zwick Roell, Ulm, Germany) measured the composite's Rockwell hardness according to ASTM D 785-98. 38 Impact energy for unnotched composite specimens was measured using an Instron (CEAST 9050) impact pendulum tester based on ASTM D 256 standards.…”

Section: Fabrication and Characterization Of The Compositementioning

confidence: 99%

“…Tensile testing was performed under ASTM Standard D 3039 M‐95 34,35 . A three‐points flexural test was performed according to ASTM Standard D 790–10 36,37 . A Zwick R5LB041 digital Shore hardness tester (Zwick Roell, Ulm, Germany) measured the composite's Rockwell hardness according to ASTM D 785–98 38 .…”

Section: Fabrication and Characterization Of The Compositementioning

confidence: 99%

Enhancing properties and sustainability: Surface modified Cymbopogon flexuosus stem fiber for green composite materials

Somasundaram,

Ananchaperumal

et al. 2023

Polymer Composites

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The lignocellulosic fiber has distinct capacities and properties from diverse perspectives. As there is a crucial need for the development of green products, many industries are racing to identify potential fibers for their products. This work focuses first on the property enhancement using chemical modification techniques for Cymbopogon flexuosus stem fiber (CFS), which is extracted from the waste residue of an oil industry. The chemically treated fibers resulted in higher cellulose (77.35%) and lower hemicellulose‐lignin contents (8.36% and 14.5%), which favors composite manufacturing. Morphological analysis on the fiber surface through scanning electron microscope (SEM) and atomic force microscope (AFM) evidenced the surface was rough, and a single fiber tensile test reveals an average tensile strength of 635 ± 4.5 MPa. Further x‐ray diffraction examination verified the existence of semi‐crystalline cellulose with a size of 14.32 nm and a higher crystallinity index of 55.17%. Secondly, to explore fiber prospective qualities against the commercially available bio‐composite, epoxy resin‐based composites were prepared by varying the weight and length of fiber reinforced. The surface‐modified CFS epoxy composite has the highest tensile strength (77.71 MPa), tensile modulus (5.26 Gpa), flexural strength (87.4 MPa), flexural modulus (1.85 GPa), hardness (64 HRRW), and impact strength (9.31 J/cm2). The thermogravimetric analyses were evaluated to assess their weight loss under heat influence. Tensile fractography was also investigated to establish the structure–property relationship between the composite and fiber. Thus, unique fiber was identified as an ecologically benign and economically viable raw material to build lightweight green materials for industrial applications.Highlights Studies explores the potential of CFSF, which is typically an industrial waste. Chemical modification reveals the enhancement of properties. Identifies optimum parameters that enhance composite properties. This aligns with the broader trend of sustainable and green manufacturing.

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“…The prepared samples were cured at atmospheric temperature for 12 h and then removed from the silicon rubber mold. 26 Table 2 depicts the specimen code for PRC with the corresponding weight fraction of pineapple leaf particulates and the used resin material.…”

Section: Preparation Of Fiber-reinforced Polymeric Composite (Frp)mentioning

confidence: 99%

Micro-mechanical analysis of the pineapple-reinforced polymeric composite by the inclusion of pineapple leaf particulates

Saha

Kumar

Zindani

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part L:

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The present study is focused on investigating the effect of the micro-mechanical properties of the natural fiber- (pineapple leaf fiber) reinforced polymeric composites by the addition of pineapple leaf micro-particulates. For the investigation, a two-step approach has been used. In the first step, finite element method-based analysis has been used to characterize the tensile and shear properties of the pineapple leaf fiber-reinforced polymeric composites (FRP) and pineapple paticulate-reinforced polymeric composites (PRC), and the adopted finite element method-based analysis has been validated through the experimental approach. In the second step, the validated finite element method-based analysis has been used to characterize the micro-mechanical properties of the hybrid fiber-reinforced polymeric composites (HFRP) fabricated using the pineapple leaf micro-particle embedded epoxy as a matrix material and the pineapple leaf fiber has been used as reinforcing material. It has been observed through the analysis that the micro-mechanical properties of HFRP were superior to that of FRP. There has been a 10.16% increment in Young’s modulus in the longitudinal direction and a 26.36% increment in Young’s modulus in the transverse direction for HFRP over FRP. Further, a 9.91% increment for in-plane shear modulus and 26.17% increment in outer-plane shear modulus have been observed for HFRP in comparison to FRP. These results suggest that pineapple leaf particulates are good reinforcing materials to enhance the transverse direction and outer plane micro-mechanical properties of the fiber-reinforced composite.

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Perspective on the mechanical response of pineapple leaf filler/toughened epoxy composites under diverse constraints

Cited by 14 publications

References 31 publications

Effect of alkaline treatment on physical, mechanical, and thermal characteristics of jute filler reinforced epoxy composites

Effect of alkaline treatment on physical, mechanical, and thermal characteristics of jute filler reinforced epoxy composites

Enhancing properties and sustainability: Surface modified Cymbopogon flexuosus stem fiber for green composite materials

Micro-mechanical analysis of the pineapple-reinforced polymeric composite by the inclusion of pineapple leaf particulates

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