Impact Resistance of Untreated and Alkali-Treated Bamboo Fibre-Reinforced Epoxy Composites: The Influence of Fibre Length and Orientation 


Vol. 27,  No. 4, pp. 1919-1933, Apr.  2026
10.1007/s12221-026-01315-w


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  Abstract

Natural fibre-reinforced composites are used to manufacture several industrial products due to their low cost and eco-friendliness. Bamboo fibre attracts attention as a reinforcing material in polymer composites due to its environmental sustainability and good mechanical properties. Bamboo fibre composites have several potential applications in the aerospace, marine, advanced transportation, power, and automotive industries. In this research work, the influence of alkali treatment, fibre staple lengths and orientations on the thermal and mechanical performance of the bamboo–epoxy composites was investigated. This study mainly focussed on the impact performance of bamboo fibre-reinforced composites (BFCs). Bamboo–epoxy composites were fabricated using a compression moulding technique to attain a fibre volume fraction of 30%. Physical, chemical, and morphological characterisations of bamboo fibre were done using an optical microscope, X-ray diffraction, FTIR, and SEM. The thermal, morphological and mechanical performances of bamboo fibre composites were evaluated using the DMA, X-ray diffraction, universal testing and low-velocity impact testing machines. The tensile strength and low-velocity impact peak force of treated continuous bamboo fibre composites were increased by 50.7% and 7.8% as compared to untreated continuous bamboo fibre composites, respectively. When staple length of fibre increased, the low-velocity impact and tensile strength of composites were also increased in parallel orientation. However, in random orientation, as the staple length of fibres increased, tensile strength of composites increased; however, the low-velocity impact performance initially increased and then decreased. The crystallinity of the composites was also increased after alkali treatment. When the staple length of fibres increased, the crystallinity of the composites also increased in parallel orientation. However, in random orientation, the crystallinity of the composites initially increased and then decreased.

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  Cite this article

[IEEE Style]

Aman, A. Yadav, L. Jajpura, A. Majumdar, M. Bajya, "Impact Resistance of Untreated and Alkali-Treated Bamboo Fibre-Reinforced Epoxy Composites: The Influence of Fibre Length and Orientation," Fibers and Polymers, vol. 27, no. 4, pp. 1919-1933, 2026. DOI: 10.1007/s12221-026-01315-w.

[ACM Style]

Aman, Anilkumar Yadav, Lalit Jajpura, Abhijit Majumdar, and Mukesh Bajya. 2026. Impact Resistance of Untreated and Alkali-Treated Bamboo Fibre-Reinforced Epoxy Composites: The Influence of Fibre Length and Orientation. Fibers and Polymers, 27, 4, (2026), 1919-1933. DOI: 10.1007/s12221-026-01315-w.

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