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<p>Natural polymers called bioplastics are made from food scraps, corn starch, bananas, oranges, and banana peels. Bioplastics are used to make straws, bowls, cutlery, packaging, and eco-friendly cutlery. The current project’s objective was to create biodegradable film from food waste. Because orange peel is readily available and has a high cellulose content, it is employed. Film mixes containing PLA and glycerol as a plasticizer have consistently produced favorable outcomes. In this study, orange peel fine powder (OPP), which is produced from dried orange peel waste, was combined with the PLA solution. The PLA/OPP solutions with different OPP loadings (i.e., 0, 30, 50, and 70% weight%) were subsequently thinned down using solution casting. The physicochemical and surface morphology of the generated material were shown to be those of biodegradable plastic with characterization techniques such as Fourier Transform InfraRed (FTIR) spectroscopy, soil burial test, swelling test, tensile analysis, young’s modulus, and elongation at break percentage. The effects of OPP on PLA’s mechanical, physicochemical, and biodegradation characteristics were thoroughly examined. By demonstrating that hydrogen bonding interactions heightened the characteristic O–H and C = O stretching bands, FTIR analysis verified the successful incorporation of OPP. PLA/30% OPP was the best formulation; it showed better elongation at break (~ 9%) than neat PLA (4%), while maintaining a moderate tensile strength (~ 10.2&#xa0;MPa). Soil burial tests revealed accelerated biodegradation, with weight loss reaching approximately 30% for PLA/50% OPP and approximately 48% for PLA/70% OPP, compared to only 7.9% for neat PLA after 12 days. OPP loading enhanced water uptake, particularly in alkaline conditions (~ 32% at 70% OPP), according to studies on swelling. These results demonstrate that OPP improves PLA’s ductility and biodegradability, suggesting potential applications in packaging and agricultural films where short service lives and environmental friendliness are necessary.</p>

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Enhanced performance of the mechanical, biodegradable, and water absorption properties of PLA orange peel polymer

  • 期刊论文

  • 发表日期：

    2025年12月10日

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  • Sarika Bajpai,
  • Minakshi Garg,
  • Krishna Narayan,
  • Ramesh Sharma,
  • Imen Kebaili

摘要

Natural polymers called bioplastics are made from food scraps, corn starch, bananas, oranges, and banana peels. Bioplastics are used to make straws, bowls, cutlery, packaging, and eco-friendly cutlery. The current project’s objective was to create biodegradable film from food waste. Because orange peel is readily available and has a high cellulose content, it is employed. Film mixes containing PLA and glycerol as a plasticizer have consistently produced favorable outcomes. In this study, orange peel fine powder (OPP), which is produced from dried orange peel waste, was combined with the PLA solution. The PLA/OPP solutions with different OPP loadings (i.e., 0, 30, 50, and 70% weight%) were subsequently thinned down using solution casting. The physicochemical and surface morphology of the generated material were shown to be those of biodegradable plastic with characterization techniques such as Fourier Transform InfraRed (FTIR) spectroscopy, soil burial test, swelling test, tensile analysis, young’s modulus, and elongation at break percentage. The effects of OPP on PLA’s mechanical, physicochemical, and biodegradation characteristics were thoroughly examined. By demonstrating that hydrogen bonding interactions heightened the characteristic O–H and C = O stretching bands, FTIR analysis verified the successful incorporation of OPP. PLA/30% OPP was the best formulation; it showed better elongation at break (~ 9%) than neat PLA (4%), while maintaining a moderate tensile strength (~ 10.2 MPa). Soil burial tests revealed accelerated biodegradation, with weight loss reaching approximately 30% for PLA/50% OPP and approximately 48% for PLA/70% OPP, compared to only 7.9% for neat PLA after 12 days. OPP loading enhanced water uptake, particularly in alkaline conditions (~ 32% at 70% OPP), according to studies on swelling. These results demonstrate that OPP improves PLA’s ductility and biodegradability, suggesting potential applications in packaging and agricultural films where short service lives and environmental friendliness are necessary.