Nowadays, it has been global demand to overcome the abundant use of synthetic fibres with respect to save the environment. Sisal fibre is one of the widely used natural fibre and being used as rein...

Sisal (Agave sisalana) fibre and its polymer-based composites: A review on current developments:

https://research-information.bris.ac.uk/files/181622479/panzera_1801_text2.pdf

Sisal-glass hybrid composites reinforced with silica microparticles

In present work, hemp fibres were subjected to alkali treatments at various concentrations (5, 10 & 15 wt.%) to prepare its polyester based composites.  Hemp fibre reinforced polyester composites were prepared by hand lay-up technique followed by static compression keeping constant 25 wt.% of fibres content in order to study influence of alkali treatment concentrations on its mechanical and dynamic mechanical properties. Mechanical properties of prepared composites were  studied in terms of tensile strength and modulus, and flexural strength and modulus whereas dynamic mechanical properties were studied in terms of storage modulus (), damping (), glass transition temperature ( T g ) and effectiveness constant of reinforcement ().  The results indicated that mechanical and dynamic mechanical properties were found to increase  due to alkali treatment up to 5%  concentration and then decrease.

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Influence of Concentrations of Alkali Treatment on Mechanical and Dynamic Mechanical Properties of Hemp/Polyester Composite

In this study, various treated, untreated, and treated kenaf/glass fiber composites were fabricated using epoxy resin. A portion of kenaf fibers were subjected to treatment with alkali, sub-portion was taken for benzoyl peroxide and potassium permanganate prior to composite fabrication. This treatment on the composite material was undertaken to achieve improved modification of the interface between the matrix and fiber bond. A portion of the glass fiber was used for enhancing the mechanical properties of the hybrid composite. The tensile strength, flexural, density, water absorption and chemical resistance of the composites were analyzed using standard methods. FTIR was conducted on the fiber to ascertain the chemical treatment on the fibers, FESEM was used for the morphological study. The results obtained showed that the tensile and flexural strength improved from 46.45-298.3 kgf, and 10.5-54.7 kgf, respectively, in the composite samples. Chemical resistance of the kenaf fiber treated potassium permanganate composite improved compared to the untreated fiber composite in both cases. The density and water absorption properties of the composites were found to decrease in the treated fibers compared to untreated fiber composites, this treated composites showed less water absorption and density. The FTIR result revealed that reaction has taken place between the fiber and the treatment reagent. Hence, fiber modification has improved the properties of the composites due to increase in fiber-matrix interaction.
                   
KEY WORDS: Chemical properties, Epoxy resin, Hybrid, Kenaf, Mechanical strength, Natural fiber
 
Bull. Chem. Soc. Ethiop. 2021, 35(1), 171-184.
DOI: https://dx.doi.org/10.4314/bcse.v35i1.15

/pdf/studies-on-physico-mechanical-behaviour-of-kenaf-glass-fiber-4yzt12dcwu.pdf

Studies on physico-mechanical behaviour of kenaf/glass fiber reinforced epoxy hybrid composites

Effect of degree of silanization of luffa on the properties of luffa-epoxy composites

Our environment is being pullulated due to the great use of synthetic fibre as reinforcement for polymer composites. Natural fibres may be better choice for replacement of synthetic fibre for polymer composite to reduced environment burden. Hybrid sisal/glass fibre reinforced epoxy composites are prepared by hand lay-up technique using different weight fractions (10, 20, 30 and 40 %) with 10 mm length of fibres. Mechanical and water absorption properties of prepared composites are investigated. This study shows that the addition of glass fibre into sisal fibre reinforced composite has increased its mechanical properties. Statistical analysis is also carried out using T-test and ANOVA and found significant variation among composites.

/pdf/mechanical-and-water-absorption-properties-of-hybrid-sisal-4c6s8npwdq.pdf

Binayak Nahak

Papers

Mechanical and Water Absorption Properties of Hybrid Sisal/Glass Fibre Reinforced Epoxy Composite