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<p>Minimizing environmental effect and expenditures requires a shift to more eco-friendly components in composite fabrication. A cost-effective and eco-friendly change to traditional reinforcing elements in polymer composites is natural fibers derived from plants, such as nettle stem. Polymer composites reinforced with nano-Al<sub>2</sub>O<sub>3</sub> filler and chemically-treated Nettle Stem fibers are the focus of this investigation. The accessible nature, mechanical properties, and environmentally friendly nature of nettle stem fibers (NSF) made from the nettle plant make them stand out. Researchers examine the effects of weight%, length, thickness, and nano-Al<sub>2</sub>O<sub>3</sub> concentration on the mechanical and physical characteristics of composites, including their ability to absorb water, their tensile strength, and their flexural strength. Composites containing 5wt% nano-Al<sub>2</sub>O<sub>3</sub> arranged among 12&#xa0;mm in length and 1&#xa0;mm in thickness have demonstrated remarkable functionality. The increased structural integrity and durability of these composites are a result of their high ultimate tensile strength of 28.2&#xa0;MPa and flexural strength of 48.34&#xa0;MPa. Water absorption rates increase with increasing fiber weight%, peaking at 3.35%, demonstrating the substantial effect of fiber dimensions. An Artificial Neural Network (ANN) and Preference Index Value (PIV) combined strategy optimizes the machining features for various objective problems. Closeness-coefficient values ranged from 94% to 99% when using Analysis of Variance (ANOVA), while ANN only managed 0.95 to 0.98%. The optimal parameters for optimization were 8&#xa0;mm fiber length, 3&#xa0;mm thickness, 10 wt% fiber weight, and 5 wt% nano - Al<sub>2</sub>O<sub>3</sub>. Ultimately, microstructural tests confirmed the experimental findings, highlighting how Nettle Stem fibers could improve the functionality of natural fiber-reinforced composites in a range of commercial uses.</p>

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Eco-efficient nettle stem fiber–reinforced polymer composites enhanced with nano-Al₂O₃: mechanical performance, water absorption, and ANN–PIV optimization

  • 期刊论文

  • 发表日期：

    2026年4月23日

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  • Shailendra Kumar Yadav,
  • Mani Mahesh,
  • G Senthilkumar,
  • Deva Anjan Kumar,
  • K Kandasamy,
  • R Girimurugan,
  • Nanthini B

摘要

Minimizing environmental effect and expenditures requires a shift to more eco-friendly components in composite fabrication. A cost-effective and eco-friendly change to traditional reinforcing elements in polymer composites is natural fibers derived from plants, such as nettle stem. Polymer composites reinforced with nano-Al2O3 filler and chemically-treated Nettle Stem fibers are the focus of this investigation. The accessible nature, mechanical properties, and environmentally friendly nature of nettle stem fibers (NSF) made from the nettle plant make them stand out. Researchers examine the effects of weight%, length, thickness, and nano-Al2O3 concentration on the mechanical and physical characteristics of composites, including their ability to absorb water, their tensile strength, and their flexural strength. Composites containing 5wt% nano-Al2O3 arranged among 12 mm in length and 1 mm in thickness have demonstrated remarkable functionality. The increased structural integrity and durability of these composites are a result of their high ultimate tensile strength of 28.2 MPa and flexural strength of 48.34 MPa. Water absorption rates increase with increasing fiber weight%, peaking at 3.35%, demonstrating the substantial effect of fiber dimensions. An Artificial Neural Network (ANN) and Preference Index Value (PIV) combined strategy optimizes the machining features for various objective problems. Closeness-coefficient values ranged from 94% to 99% when using Analysis of Variance (ANOVA), while ANN only managed 0.95 to 0.98%. The optimal parameters for optimization were 8 mm fiber length, 3 mm thickness, 10 wt% fiber weight, and 5 wt% nano - Al2O3. Ultimately, microstructural tests confirmed the experimental findings, highlighting how Nettle Stem fibers could improve the functionality of natural fiber-reinforced composites in a range of commercial uses.