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<p>This study explores the usability of water hyacinth (WH), an invasive aquatic weed, as a reinforcement material in polyester composites alongside jute. Hybrid composites were fabricated using a compression molding process at a constant fiber-to-resin ratio of 25:75 (wt%) with varying fiber compositions, including 100% jute (J100), 75% jute/25% WH (J75WH25), 50% jute/50% WH (J50WH50), 25% jute/75% WH (J25WH75), and 100% water hyacinth (WH100). The results showed that 100% jute-reinforced composite exhibited the maximum tensile strength (21.26&#xa0;MPa) and modulus (1306.77&#xa0;MPa), while 100% water hyacinth-reinforced composite demonstrated the highest elongation at break (7.22%), indicating improved ductility. Impact strength was maximized in 100% jute (6.328&#xa0;kJ/m<sup>2</sup>) and WH25J75 demonstrated a comparable impact strength (5.62&#xa0;kJ/m<sup>2</sup>) to J100, confirming a strong hybrid synergy. Fractographic analysis highlighted fiber pull-out and brittle resin fracture under tensile loading, whereas impact failure was characterized by fiber rupture, matrix tearing, and micro-crack branching. This research shows that water hyacinth can improve the toughness and energy absorption of hybrid polyester composites, while jute provides the superior strength and stiffness, establishing its potential as an eco-friendly reinforcement and highlighting a sustainable approach by valorizing invasive water hyacinth in hybrid polyester composites.</p>

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Hybrid jute–water hyacinth fiber reinforced polyester composites: valorizing natural waste towards sustainable materials

  • 期刊论文

  • 发表日期：

    2026年3月25日

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  • Md. Syduzzaman,
  • Sabrina Shahrin Swarna,
  • Dilruba Yeasmin,
  • Rowshanuzzaman Kanon

摘要

This study explores the usability of water hyacinth (WH), an invasive aquatic weed, as a reinforcement material in polyester composites alongside jute. Hybrid composites were fabricated using a compression molding process at a constant fiber-to-resin ratio of 25:75 (wt%) with varying fiber compositions, including 100% jute (J100), 75% jute/25% WH (J75WH25), 50% jute/50% WH (J50WH50), 25% jute/75% WH (J25WH75), and 100% water hyacinth (WH100). The results showed that 100% jute-reinforced composite exhibited the maximum tensile strength (21.26 MPa) and modulus (1306.77 MPa), while 100% water hyacinth-reinforced composite demonstrated the highest elongation at break (7.22%), indicating improved ductility. Impact strength was maximized in 100% jute (6.328 kJ/m2) and WH25J75 demonstrated a comparable impact strength (5.62 kJ/m2) to J100, confirming a strong hybrid synergy. Fractographic analysis highlighted fiber pull-out and brittle resin fracture under tensile loading, whereas impact failure was characterized by fiber rupture, matrix tearing, and micro-crack branching. This research shows that water hyacinth can improve the toughness and energy absorption of hybrid polyester composites, while jute provides the superior strength and stiffness, establishing its potential as an eco-friendly reinforcement and highlighting a sustainable approach by valorizing invasive water hyacinth in hybrid polyester composites.