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Revista Chapingo serie ciencias forestales y del ambiente

versión On-line ISSN 2007-4018versión impresa ISSN 2007-3828

Resumen

COLIN-TORRES, Jorge; GONZALEZ-PENA, Marcos M.; HIDALGO-REYES, Martin  y  PEREZ-LOPEZ, Artemio. Physico-mechanical performance of an epoxy matrix biocomposite reinforced with Agave angustifolia Haw. Rev. Chapingo ser. cienc. for. ambient [online]. 2024, vol.30, n.1, rrchscfa202302012.  Epub 03-Dic-2024. ISSN 2007-4018.  https://doi.org/10.5154/r.rchscfa.2023.02.012.

Introduction:

Biocomposites reinforced with natural fibers are important for the use of biodegradable and renewable waste.

Objective:

The aim of this study was to evaluate the physical-mechanical performance of a laminar biocomposite developed with a low viscosity epoxy polymer matrix, reinforced with Agave angustifolia Haw. bagasse fibers.

Materials and methods:

Twelve panels were prepared combining three fiber contents (18 %, 24 % and 30 %) with four lengths (1 mm, 3 mm, 6 mm and mixed). Mechanical tests were performed, and the results were compared with the control (pure resin). Three chemical treatments (sodium bicarbonate, vinyl triethoxy silane and sodium hydroxide) and their effect on physico-mechanical properties were evaluated at the fiber-matrix interface; in addition, hybridization with glass fiber was evaluated.

Results and discussion:

Adding fiber reduced the ultimate tensile and flexural strength of the biocomposite by 15.27 %; however, the tensile and flexural moduli increased by up to 1/3 compared to the control. The best chemical treatment (sodium bicarbonate) increased the mechanical properties of the fibers (hardness [46 %] and tensile strength [6 %] and flexural strength [24 %]) and impact strength (38 %), while density and moisture resistance decreased 17 % and 11 %, respectively. The agave/glass fiber combination increased flexural strength up to 77.3 %.

Conclusions:

A. angustifolia fibers have potential to be used in industry, because they improve the mechanical properties of the material; in addition, their use would represent an alternative for managing waste residues.

Palabras llave : agave bagasse; sodium bicarbonate; glass fiber; agroindustrial wastes; material strength..

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