Preparation and characterization of alkali treated cocos nucifera var aurantiaca peduncle fibers reinforced epoxy composites

Nagarajan, K.; Balaji, A.; Ramanujam, N. R.; Rajan, S Thanga Kasi

doi:10.1088/2053-1591/ab54ff

Cited by 18 publications

(13 citation statements)

References 31 publications

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“…The maximum flexural modulus of 10.7 GPa was observed on the AAL25 composite. Similar observations of enhanced flexural properties of the composite have been reported by Nagarajan et al 34 on alkali-treated Cocos nucifera natural fiber composite. However, the flexural modulus decreases beyond 25% of AS particles in untreated and alkaline conditions.…”

Section: Flexural Strength and Modulus Of The As Particle Filled Comp...supporting

confidence: 89%

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A spatial distribution effect of almond shell bio filler on physical, mechanical, thermal deflection and water absorption properties of vinyl ester polymer composite

Palaniyappan¹,

Veiravan

Rajkumar

et al. 2022

Polymer Composites

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The present work deals with the effective utilization of almond shell bio-waste fillers in the production of vinyl ester polymer composites. The almond shell particle surface was chemically modified by alkaline treatment. The almond shell particles with varying weight percentages of 5%-30% were used to prepare the vinyl ester polymer composite. The experimental results show that a 25% addition of alkaline-treated almond shell particles significantly improved the mechanical properties of the composite when compared to pure vinyl ester and untreated almond-filled composite samples. The highest tensile, flexural, impact strength, and Shore D hardness of the 25% alkaline-treated almond shell composite were 54, 142 MPa, 31, and 79 kJ/m 2 , respectively. This was due to the alkaline treatment of almond shell particles, which improved the interfacial adhesion between the vinyl ester matrix and almond particles. The heat deflection temperature of the 25% alkaline treated almond shell particlefilled vinyl ester matrix composite was 72 C. The thermal insulating characteristics of alkali-treated almond shells were improved due to the reduction of quickly thermal degradable materials such as hemicelluloses and lignin, as indicated by Fourier transform infrared spectroscopic data, and more exposure of minerals to the surface, as confirmed by energy dispersive X-ray analysis. The addition of alkaline-treated almond shell particles improves the characteristics of the vinyl ester matrix and allows the development of biocomposites. K E Y W O R D S alkaline treatment, almond shell, bio-composite, mechanical properties, thermal deflection, vinyl ester

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Section: Flexural Strength and Modulus Of The As Particle Filled Comp...supporting

confidence: 89%

“…This may be due to the untreated particle's having more surface impurities, which could reduce the surface interface adhesion of the particle with the polymeric matrix. 34 Figure 12B shows the impact test results of the AAL25 polymeric composite. There is an absence of particle pullout in the AAL25 composite.…”

Section: Heat Deflection Temperaturementioning

confidence: 99%

A spatial distribution effect of almond shell bio filler on physical, mechanical, thermal deflection and water absorption properties of vinyl ester polymer composite

Palaniyappan¹,

Veiravan

Rajkumar

et al. 2022

Polymer Composites

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“…Despite this benefit, manufacturing of synthetic fiber has a number of drawbacks, including high energy consumption, human health risks, and the accumulation of solid waste due to its non-biodegradable nature. [3][4][5] These disadvantages necessitate the use of plant-based natural fiber reinforced polymer composites in place of synthetic fibers. Plantbased natural fibers are less expensive, environmentally benign, and biodegradable.…”

Section: Introductionmentioning

confidence: 99%

“…These synthetic fiber reinforcements, which are man‐made, improved the mechanical properties of polymer composites and are used in the aerospace and defense industries. Despite this benefit, manufacturing of synthetic fiber has a number of drawbacks, including high energy consumption, human health risks, and the accumulation of solid waste due to its non‐biodegradable nature 3–5 . These disadvantages necessitate the use of plant‐based natural fiber reinforced polymer composites in place of synthetic fibers.…”

Section: Introductionmentioning

confidence: 99%

Characterization of Cocos nucifera L. peduncle fiber reinforced polymer composites for lightweight sustainable applications

Mansingh

Binoj²,

Anbazhagan³

et al. 2022

J of Applied Polymer Sci

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The present work aims to investigate the potentiality of reinforcing coconut tree peduncle fiber an agro-waste with unsaturated polyester resin, optimizing its mechanical properties and promote as an alternative reinforcement to harmful synthetic fiber polymer composites. It was found that polymer composites with 40 wt% fiber content exhibited maximum mechanical properties and started to decline on further addition of fibers due to lack of sufficient resin to wet the fibers leading to fiber pull-out and debonding under applied loads. This was also evidenced from the observed micrograph of specimen undergone tensile failure.In addition, the chemical bonding between the fiber and matrix was confirmed through Fourier transform infrared analysis. Also, the thermal stability was ascertained by the degradation temperature obtained through thermo-gravimetric analysis. Moreover, the water absorption study in fresh and seawater exposed the pseudo-Fickian behavior and aquatic properties of the developed composite, which was further confirmed by the crystalline size obtained through X-ray diffraction analysis. The above holistic analysis of the fabricated composite ensures its sustainable use in automotive and marine industries.

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“…Several papers have discussed the effect of alkalization on different natural fiber reinforced composites (Nama et al (2011), Vignesh (2018, Ganapathy et al (2019), Li et al (2019), Mittal and Chaudhary (2019), Nagarajan et al (2019), Salim et al (2019), Vinod et al (2019)). This low-cost method improves the mechanical performances of composites by approximately 40%-50% compared to untreated materials (Bodur et al 2016).…”

Section: Introductionmentioning

confidence: 99%

Enhancement of fiber-matrix interface of recycled cotton fibers reinforced epoxy composite for improved mechanical properties

Baccouch

Ghith

Yalcin-Enis

et al. 2020

Mater. Res. Express

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The aim of this study is to enhance the fiber-matrix interface of cotton waste reinforced composite panels by a specific chemical treatment. For this purpose, cotton fibers are treated in sodium hydroxide (NaOH) solution with three different concentrations (0.5 M, 1 M, and 1.5 M) and three different soaking times combinations (1 h, 3 h, and 5 h). Mechanical evaluation of treated and untreated reinforcements and composite panels are characterized using tensile test whereas the chemistries of fiber reinforcements are investigated using Fourier-transform infrared spectroscopy analysis and the fiber-matrix interactions are morphologically examined using scanning electron microscopy. Results indicate a remarkable enhancement in mechanical properties of composites via improving the interfacial adhesion and compatibility between fiber and matrix with a significant increase of Young modulus up to 270% for reinforcements and to 70% for composite materials compared to untreated materials.

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Preparation and characterization of alkali treated cocos nucifera var aurantiaca peduncle fibers reinforced epoxy composites

Cited by 18 publications

References 31 publications

A spatial distribution effect of almond shell bio filler on physical, mechanical, thermal deflection and water absorption properties of vinyl ester polymer composite

A spatial distribution effect of almond shell bio filler on physical, mechanical, thermal deflection and water absorption properties of vinyl ester polymer composite

Characterization of Cocos nucifera L. peduncle fiber reinforced polymer composites for lightweight sustainable applications

Enhancement of fiber-matrix interface of recycled cotton fibers reinforced epoxy composite for improved mechanical properties

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