Effect of porous coffee ground biochar on EMI shielding effectiveness of coconut spathe rachilla long fibre-reinforced lightweight vinyl ester biocomposite

Kanchana, K.; K, Anoop; Vinod, V. P.; Kavitha, K.

doi:10.1007/s13399-023-04626-7

Cited by 4 publications

(1 citation statement)

References 37 publications

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“…Kanchana et al developed a lightweight vinyl-based EMI shielding biocomposite using coffee ground porous biochar and coconut rachilla long fibre. Their research findings show that adding 40% of rachilla fibres to the composite results in increased mechanical, dielectric, and EMI shielding [19]. Akter et al evaluated the spathe fibre reinforced composites concerning their mechanical qualities, such as tensile and flexural strengths, impact strength, and hardness, as well as their physical characteristics, such as bulk density and water absorption [3].…”

Section: Introductionmentioning

confidence: 99%

Comprehensive characterization of spathe fibres extracted from Cocos nucifera: physical, chemical, mechanical, thermal, and acoustic properties for insulation applications

Alagarsamy,

Pitchipoo,

Kumar

2024

Mater. Res. Express

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In this study, a complete characterization of fibres extracted from the spathe of the Cocos nucifera plant and the properties of spathe fibres are compared with coir fibre extracted from the outer husk of coconut. Coconut spathe fibre is available as bio waste in bulk. The spathe fibres were carefully extracted, pre-treated with NaOH, and porous nonwoven fibre mat were prepared. The physical properties of spathe fibres were measured as per ASTM standards, and average length, diameter, and linear density were found to be 222 mm, 330 μm, and 58.85 tex, respectively. Chemical compositions, XRD analysis, single fibre tensile strength and elongation, morphological analysis by scanning electron microscopy (SEM), and thermal characterization by TGA were also carried out. Spathe fibres treated with NaOH resulted in a 5% reduction in crystallinity index and more surface unevenness and pits. Developing acoustic insulation fibre mat from spathe fibre is a first-of-its-kind study. The sound absorption coefficient of the spathe fibre mat obtained from the impedance tube tester brings out a maximum absorption coefficient of 0.950 at 3150 Hz. The results were compared with coir fibre extracted from the outer husk of coconut and concluded that coconut spathe fibre is a suitable alternative for synthetic and other natural fibres.

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Section: Introductionmentioning

confidence: 99%