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<p>The increasing environmental problems concerning the accumulation of poly lactic acid (PLA) based bio-composite, nonbiodegradable packaging waste with Reduced Graphene Oxide-treated Sisal Fiber (SF) and banana fiber has been developed with the addition of lignin as bio-filler. The aim were come up with biodegradable packaging material which has a high-level of environmental and chemical strength as sustainable modification to conventional plastics. It produces 5 composites that hold a fixed PLA concentration of 60wt% and the lignin portion of 0 to 16wt%. Reduced graphene oxide as a treatment enhanced adherence of the fiber matrix and gave it antibacterial properties. The 8wt% lignin composite (RG-2) demonstrated better performance of flexural strength of (39Mpa), tensile strength of (22.7&#xa0;MPa), faster degradation, higher impact resistance, and had high hardness of the surface. This outstanding efficiency has been attributed to a regular effective bonding and dispersion, strong interfacial interaction among PLA matrix and fibers. Dynamic and thermogravimetric mechanical evaluation confirmed the presence of an improved damping properties and Fourier transform infrared spectroscopy and thermal stability supported chemical interactions. There was a more consistent shape of SEM images and fewer voids. The composite was highly degradable, and had an antioxidant activity greater than 40. This is an all-purpose green bio-composite combining stability, biodegradability, and strength which avails viable alternative to packaging uses.</p>

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Enhanced mechanical, thermal, and antibacterial performance of lignin-filled PLA bio-composites reinforced with rGO-modified natural fibers for sustainable packaging

  • 期刊论文

  • 发表日期：

    2026年5月7日

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  • Mit C. Patel,
  • Kapil S. Banker,
  • Mitalkumar Gulabbhai Patel,
  • Hetalkumar Ishwarbhai Chaudhari,
  • Piyushkumar M. Mistri,
  • Milapkumar Mohanbhai Madhikar

摘要

The increasing environmental problems concerning the accumulation of poly lactic acid (PLA) based bio-composite, nonbiodegradable packaging waste with Reduced Graphene Oxide-treated Sisal Fiber (SF) and banana fiber has been developed with the addition of lignin as bio-filler. The aim were come up with biodegradable packaging material which has a high-level of environmental and chemical strength as sustainable modification to conventional plastics. It produces 5 composites that hold a fixed PLA concentration of 60wt% and the lignin portion of 0 to 16wt%. Reduced graphene oxide as a treatment enhanced adherence of the fiber matrix and gave it antibacterial properties. The 8wt% lignin composite (RG-2) demonstrated better performance of flexural strength of (39Mpa), tensile strength of (22.7 MPa), faster degradation, higher impact resistance, and had high hardness of the surface. This outstanding efficiency has been attributed to a regular effective bonding and dispersion, strong interfacial interaction among PLA matrix and fibers. Dynamic and thermogravimetric mechanical evaluation confirmed the presence of an improved damping properties and Fourier transform infrared spectroscopy and thermal stability supported chemical interactions. There was a more consistent shape of SEM images and fewer voids. The composite was highly degradable, and had an antioxidant activity greater than 40. This is an all-purpose green bio-composite combining stability, biodegradability, and strength which avails viable alternative to packaging uses.