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<p>In an effort to enhance the mechanical capabilities, a new polymer-based nanocomposite material reinforced with banana fiber and distributed with graphene nanoflakes has been fabricated. The current research uses L-12 epoxy resin as the base matrix to create a unique nanocomposite material with graphene at nano and banana fibers at macro levels as reinforcements. Composition of banana fibers is kept fixed at 15% by weight as it has been found as one of the best by various researchers and powder graphene varying from 0.5 to 2.5% by weight of the entire composite. Graphene has been dispersed into the epoxy using acetone solvent using sonication process in a magnetic stirrer. The nano composites were created by hand lay-up in a steel mould using a procedure that adhered to ASTM guidelines. In addition to FTIR, XRD and SEM analysis, tensile, 3-point flexural, and hardness tests were performed. Water absorption testing with contact angle measurement is performed to test the composite’s durability. The composite having the highest and lowest water absorption over time was the one with a graphene concentration of 2.5% and 1%, respectively which is inversely proportional to the contact angle measurements which ranges between 64.96° and 95.82°. The sample with the greatest tensile strength was the one containing 1% graphene. Tensile and flexural test results confirm with the crystallinity index obtained from the XRD plots. Consequently, 1% graphene concentration is appropriate for the production of graphene banana epoxy nanocomposites (GBEnC).</p>

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Investigation of Mechanical Properties and Water Absorbing Capabilities of Banana Fiber Reinforced Epoxy Nanocomposite with Dispersed Graphene

  • 期刊论文

  • 发表日期：

    2025年8月7日

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  • Koustov Mondol,
  • Sunil Singh Rana,
  • Goutam Paul

摘要

In an effort to enhance the mechanical capabilities, a new polymer-based nanocomposite material reinforced with banana fiber and distributed with graphene nanoflakes has been fabricated. The current research uses L-12 epoxy resin as the base matrix to create a unique nanocomposite material with graphene at nano and banana fibers at macro levels as reinforcements. Composition of banana fibers is kept fixed at 15% by weight as it has been found as one of the best by various researchers and powder graphene varying from 0.5 to 2.5% by weight of the entire composite. Graphene has been dispersed into the epoxy using acetone solvent using sonication process in a magnetic stirrer. The nano composites were created by hand lay-up in a steel mould using a procedure that adhered to ASTM guidelines. In addition to FTIR, XRD and SEM analysis, tensile, 3-point flexural, and hardness tests were performed. Water absorption testing with contact angle measurement is performed to test the composite’s durability. The composite having the highest and lowest water absorption over time was the one with a graphene concentration of 2.5% and 1%, respectively which is inversely proportional to the contact angle measurements which ranges between 64.96° and 95.82°. The sample with the greatest tensile strength was the one containing 1% graphene. Tensile and flexural test results confirm with the crystallinity index obtained from the XRD plots. Consequently, 1% graphene concentration is appropriate for the production of graphene banana epoxy nanocomposites (GBEnC).