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Journal of Metals, Materials and Minerals

Publication Date

2026

Abstract

This study investigates the mechanical and microstructural attributes of epoxy composites with hemp fiber reinforcements and incorporated aluminum oxide (Al2O3), silicon dioxide (SiO2), and magnesium oxide (MgO) nanoparticles at different weight fractions of 0.5 wt%, 1.0 wt%, and 1.5 wt%. Nano-fillers remarkably improved the composite performance, as indicated by tensile and flexural tests conducted by ASTM D3039 and ASTM D790 standards. The composite containing 1.5 wt% Al2O3 outperformed other nano filled composites with a tensile strength of 64 MPa and tensile modulus of 3.6 GPa, versus 52 MPa and 3.0 GPa for the unfilled hemp/epoxy composite. In parallel, flexural strength and modulus also improved from 78 MPa and 3.5 GPa (unfilled) to 93 MPa and 4.2 GPa with 1.5 wt% Al2O3. SEM images corroborated the improved interfacial bonding and diminished fiber pull-out in nano-filled composites. The addition of nanofillers, mainly Al2O3, greatly improved the structural integrity of the hemp-based green composites, allowing for their use in sustainable load-bearing engineering applications.

DOI

10.55713/jmmm.v36i2.2427

First Page

1

Last Page

6

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