Mechanical and Thermal Properties of Chloris barbata flower fiber /Epoxy Composites: Effect of Alkali treatment and Fiber weight fraction

Rajan, B. Muthu Chozha; Suyambulingam, Indran; Divya, D.; Narayanasamy, P.; Khan, Anish; Asiri, Abdullah M.; Sivakumar, N.

doi:10.1080/15440478.2020.1848703

Cited by 40 publications

(18 citation statements)

References 36 publications

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“…The impact strength of 20 PMAPFC and UMAPFC was 72.68 J/m and 71.38 J/m, respectively. Because alkali‐processed MAPFs have a higher crystallinity index and less hemicellulose, [ 31 ] they scatter more readily into the polyester matrix, increasing impact strength of the composite. The Table 3 shows above results summary in compared to other treated natural fibers.…”

Section: Resultsmentioning

confidence: 99%

“…At a 210–360°C, the second stage of mass loss occurs, impacting hemicelluloses, lignin, and cellulose. [ 14,31 ] The third stage of mass loss (360–470°C) is caused by the breakdown of cellulose and resin. Wax and lignin were destroyed at temperatures ranging from 470 to 600°C.…”

Section: Resultsmentioning

confidence: 99%

“…The measurements of the composite were designed in accordance with ASTM standards (ASTM D3039-78, ASTM D790-15, ASTMD256-10) for tensile, flexural, and impact testing (Figure 2). [30][31][32] Tensile and flexural tests were done at a speed of 2 mm/min using universal testing equipment (Instron 6800). Izod impact tests were performed using a digital pendulum impact tester (GT-7045-HM) with an impact rate of 25 3.46 m/s.…”

Section: Mechanical Investigationsmentioning

confidence: 99%

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Mechanical, surface morphological, and thermal properties of Musa acuminate peduncles fiber reinforced polyester composites: Fiber loading and alkalization impact

2022

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The current study focuses on treated and untreated Musa acuminate peduncles fiber (MAPFs) reinforced polyester composites for lightweight application. For the first time, the impact of alkali treatment and fiber weight fraction on the mechanical, thermal, and morphological characteristics of MAPFs bonded polyester composites have been examined. The fiber from 0 to 25 wt% (alkalitreated and raw) was reinforced with polyester matrix in compression/hand lay method. At 20 wt% of fiber, significant improvements in tensile strength (40.97 MPa), tensile modulus (1.18 GPa), impact (72.68 J/m), flexural strength (63.54 MPa) and flexural modulus (2.16 GPa) were recorded, whereas beyond reduces the properties. Following tensile testing, the fractured cross-sections of the composite were investigated using scanning electron microscope, which demonstrated that the alkali-treated MAPFs reinforced polyester composite had fewer voids and better fiber bonding. Thermogravimetric and atomic force microscopy analysis show that alkali-treated MAPFs are a viable reinforcement for polyester matrix due to higher degradation temperature and surface roughness observations.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Mechanical Investigationsmentioning

confidence: 99%

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Mechanical, surface morphological, and thermal properties of Musa acuminate peduncles fiber reinforced polyester composites: Fiber loading and alkalization impact

2022

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“…Samples were placed in an alumina pan and heating rate was increased 20 C/min from 35 to 800 C. An inactive environment was formed by circulating nitrogen gas into the heating chamber. [76] 5 | RESULT AND DISCUSSION ON THE CHARACTERIZATION OF MAFC…”

Section: Thermal Analysis Of Mafcmentioning

confidence: 99%

“…This decline in the tensile strength of the MAFC denoted that MAF cannot be adequately bonded with polyester matrix when augmenting MAF content more than 30 wt%. [76] Figure 9B showed the Young's moduli of the MAFC. The MAFC with MAF length of 10, 20, and 30 mm delivered a higher tensile modulus at 30 wt% fiber addition.…”

Section: Tensile Properties Of Mafcmentioning

confidence: 99%

Utilization of Mucuna atropurpurea stem fiber as a reinforcement in fiber reinforced plastics

Senthamaraikannan¹,

Saravanakumar²

2022

Polymer Composites

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This research investigated the scope of using a fiber harvested from Mucuna atropurpurea (MAF) plant as reinforcement in fiber-reinforced plastics. An optical microscope and a pycnometer were used to calculate the diameter (289 ± 21 μm) and density (1082 ± 29 kg/m 3 ) of the MAF. Using chemical compositional analysis, 58.74 ± 5.74 wt% cellulose and 16.31 ± 3.21 wt% hemicellulose, and 14.22 ± 3.36 wt% lignin and 0.38 ± 0.08 wt% wax components were found in the MAF. Numerous chemical stretching in the MAF were checked using Fourier transform infrared spectroscopy. Briodo analysis (68.08 kJ/mol) showed the kinetic activation energy of the MAF. Surface morphological inspections suggested surface treatments of MAF due to contaminations and wax on the fiber surface. The statistical analysis conducted for determining the tensile properties of MAF revealed that MAF is a suitable candidate to produce fiber-reinforced plastics. Characterization of MAF-reinforced polyester composites showed that 40 mm fiber length and 30 wt% fiber enhanced tensile strength (109.51 ± 2.1 MPa), flexural strength (156.62 ± 3.1 MPa), and hardness (94 ± 4 HRRW). Fractography images of composites with fiber pull-outs in the MAF-reinforced plastics were taken for analysis. Less cavities and voids in the 30 wt% MAF-reinforced composites were found along with reduced water absorption.

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Comprehensive characterization of Echinochloa frumentacea leaf fiber as a novel reinforcement for composite applications

Rathinavelu

Paramathma

2022

Polymer Composites

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The promising characteristic features of some natural plant fibers identified has driven many scientists/researchers to seek more plant fibers with good mechanical, thermal, tensile and surface properties. Plant fibers with such characteristics along with their renewable, degradable, eco‐friendly, cost‐effective nature could make them a probable competitor against synthetic ones, in many aspects. Since identification of novel plant fibers with superior quality is necessary at the moment in order to reduce the harmful effects of synthetic materials. Since the current study recognized a novel natural plant fiber from Echinochloa frumentacea and analyzed its efficiency for composite fabrication through various characterization practices. It was found from the physico‐chemical investigation that the fiber encloses with good crystallinity index (35.87%), cellulose content (60.31%) and relatively low density (896 ± 32.14 kg/m3). In fact, EFLF's has admirable thermal stability (330°C) and tensile strength (204.32 ± 14.25 MPa) designated its suitability for temperature varying environments. Conversely, the proposed fiber ensures good fiber‐matrix adhesion in spite of good surface roughness and decreased microfibrillar angle (9.27 ± 0.31°), noted by surface analysis. Hence, the current study recommends further utilization of EFLF as a reinforcing material with high specific qualities and low environmental effect, for composite manufacturing.

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Mechanical and Thermal Properties of Chloris barbata flower fiber /Epoxy Composites: Effect of Alkali treatment and Fiber weight fraction

Cited by 40 publications

References 36 publications

Mechanical, surface morphological, and thermal properties of Musa acuminate peduncles fiber reinforced polyester composites: Fiber loading and alkalization impact

Mechanical, surface morphological, and thermal properties of Musa acuminate peduncles fiber reinforced polyester composites: Fiber loading and alkalization impact

Utilization of Mucuna atropurpurea stem fiber as a reinforcement in fiber reinforced plastics

Comprehensive characterization of Echinochloa frumentacea leaf fiber as a novel reinforcement for composite applications

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