Physical and thermal behaviour of areca and coconut shell powder reinforced epoxy composites

Chowdari, G. Kishore; Prasad, D.V.V. Krishna; Devireddy, Siva Bhaskara Rao

doi:10.1016/j.matpr.2020.02.282

Cited by 13 publications

(9 citation statements)

References 5 publications

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“…It was shown in many types of researches that biocomposites with good physical properties can be obtained by mixing CSP with different matrix systems 16–18 . Therefore, CSP proved as a candidate to obtain novel biocomposites that have better properties compared with non‐degradable fillers 19,20 . It was figured out that increasing the amount of CSP in the different kinds of matrix systems such as polyester, 21,22 polylactic acid, 23 polyethylene, 24 and epoxy resin 23,25,11 increases Young's modulus, tensile modulus, and tensile strength of biocomposites compared with neat matrices.…”

Section: Introductionmentioning

confidence: 99%

Preparation and ultrasonic characterization of modified epoxy resin/coconut shell powder biocomposites

Oral

Kocaman

Ahmetli

2021

J of Applied Polymer Sci

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A new bio‐based epoxy resin (BER) is produced by the esterification reaction between sebacic acid (SAc) as bio‐based acid and epichlorohydrin (ECH). The epoxy resin (ER) is modified with the BER. The biocomposites are prepared using untreated coconut shell powder (CSP), modified coconut shell powder (MCSP), and MER. The CSP and MCSP particles are mixed with MER in varied compositions (10–50 wt%) for preparation of the MER/CSP and MER/MCSP biocomposites. The influences of CSP and MCSP bio‐fillers amounts on the physical properties (density, elastic constants, acoustic impedance, ultrasonic micro‐hardness, and attenuation coefficient) of biocomposites are investigated using the ultrasonic pulse‐echo overlap method (PEOM). It was seen that the densities, both ultrasonic longitudinal and shear waves' velocity values of obtained biocomposites were higher than those of the MER. All elastic moduli of the MER/MCSP biocomposites have higher values than of the neat MER and MER/CSP biocomposites.

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Section: Introductionmentioning

confidence: 99%

Preparation and ultrasonic characterization of modified epoxy resin/coconut shell powder biocomposites

Oral

Kocaman

Ahmetli

2021

J of Applied Polymer Sci

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“…In summary, the addition of natural fibers to an epoxy matrix is expected to lower the thermal stability of the resulting composites [ 9 , 34 , 35 , 159 , 160 , 162 ] due to the hydrophilicity nature of the natural fibers. However, the hybridization of natural fibers with synthetic fibers such as glass fibers is expected to improve the thermal stability of the composites [ 163 ].…”

Section: Thermal Properties Of Epoxy-based Natural Fiber Biocompositesmentioning

confidence: 99%

“…In the area of thermal insulation, epoxy-based biocomposites are equally valuable thermal insulators. For example, Chowdari et al [ 35 ] fabricated areca/coconut shell powder epoxy hybrid composites, and the thermal properties of the epoxy were found to decrease with increasing fiber contents. The hybrid composite material was found to be an excellent thermal insulator.…”

Section: Application Of Epoxy-based Natural Fibers Biocomposite Mater...mentioning

confidence: 99%

“…Regarding the electrical surface resistivity of the composite, values of 1.27 × 10 10 Ω/m 2 and 7.29 × 10 9 Ω/m 2 were reported for epoxy/rice husk and epoxy saw dust biocomposites, respectively. The decrease in thermal and electrical conductivity of epoxy with natural fiber inclusion is attributed to the fact that natural fibers have a porous structure that enables them to entrap air within their molecular structure [ 10 , 34 , 35 , 36 , 37 , 38 ]. The acoustic performance of epoxy-containing rice husk and sawdust was equally evaluated, and the sound absorption of epoxy was improved with rice and sawdust incorporation.…”

Section: Introductionmentioning

confidence: 99%

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Recent Development in the Processing, Properties, and Applications of Epoxy-Based Natural Fiber Polymer Biocomposites

et al. 2022

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Growing environmental concerns have increased the scientific interest in the utilization of natural fibers for the development of epoxy biocomposite materials. The incorporation of one or more fibers in the production of hybrid epoxy polymer composites has been a subject of discussion. It is interesting to acknowledge that natural/synthetic fiber hybridized epoxy composites have superior properties over natural/natural fiber hybridized epoxy composites. Significant efforts have been devoted to the improvement of natural fiber surface modifications to promote bonding with the epoxy matrix. However, to achieve sufficient surface modification without destroying the natural fibers, optimization of treatment parameters such as the concentration of the treatment solution and treatment time is highly necessary. Synthetic and treated natural fiber hybridization in an epoxy matrix is expected to produce biocomposites with appreciable biodegradability and superior mechanical properties by manipulating the fiber/matrix interfacial bonding. This paper presents a review of studies on the processing of epoxy natural fiber composites, mechanical properties, physical properties such as density and water absorption, thermal properties, biodegradability study, nondestructive examination, morphological characterizations, and applications of epoxy-based natural fiber biocomposites. Other aspects, including a review of variables that enhance the mechanical and functional performance of epoxy/natural fibers composites while also increasing the biodegradability of the composite material for environmental sustainability, were presented. The future research focus was elucidated. It is hoped that this review will stimulate and refocus research efforts toward advancing the manufacture of epoxy/natural fiber composites to meet the growing demand for biocomposite materials in the global world.

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“…The composites are synthesized using randomly dispersed groundnut shell particles of various grain sizes and an epoxy resin matrix, and it is discovered that grain size has a significant influence on the mechanical characteristics of the composite, viz., the tensile and impact strength characteristics [4]. Epoxy-based hybrid composites are produced by reinforcing areca and coconut shell powder, and the cast composite is tested for density, void content, and thermal characteristics according to American Society for Testing and Materials (ASTM) standards [5]. Further, luffa cylindrical is used as the reinforcement, epoxy resin as the matrix with furfural alcohol, and NaOH for the surface treatment of the reinforcements, which resulted in improved mechanical characteristics [6].…”

Section: Introductionmentioning

confidence: 99%

Mechanical and Water Absorption Characterization of Mango Seed Shell/Epoxy Composite for Low Load Carrying Structures

Kumar

Naik

Waddar

et al. 2023

International Journal of Polymer Science

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The present work deals with the characterization of mango seed shell fiber reinforced epoxy composites by using hand layup method by varying the volume composition of the mango seed shell from 0 vol. % to 60 vol. % (M-0 to M-60). The physical density test, tensile test, flexural test, and water absorption test were conducted as per the American Society for Testing and Materials (ASTM) standards. Results revealed that the tensile strength of M-20 (20 vol. %) is 43% more than a neat epoxy, while the flexural strength of M-50 (50 vol. %) is greater than 10.85% more than a neat epoxy. The water absorption test was conducted by immersing the samples in distilled water at room temperature, and the weight of the specimens was measured and recorded at every 24-hour time interval. For all composite samples, saturation in water absorption and thickness swelling were observed after 432 hours of water immersion. The moisture absorption increases with the inclusion of reinforcements as compared to the neat epoxy samples. However, for the M-50 composite, the water absorption decreases due to the uniform mixing and stronger bonding between the matrix and the reinforcements. The scanning electron microscope (SEM) images of the composite specimens also depicted the particulate fiber distribution and the presence of micro-voids in the epoxy matrix.

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Physical and thermal behaviour of areca and coconut shell powder reinforced epoxy composites

Cited by 13 publications

References 5 publications

Preparation and ultrasonic characterization of modified epoxy resin/coconut shell powder biocomposites

Preparation and ultrasonic characterization of modified epoxy resin/coconut shell powder biocomposites

Recent Development in the Processing, Properties, and Applications of Epoxy-Based Natural Fiber Polymer Biocomposites

Mechanical and Water Absorption Characterization of Mango Seed Shell/Epoxy Composite for Low Load Carrying Structures

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