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<p>In 21st century, biopolymers are getting attention in food packaging industries as they are biodegradable and non-toxic to the environment. While over the past decades, plastics have been used as a major food packaging material but due to its toxic effects, there is a need to develop eco-friendly, sustainable materials that can be used safely in food packaging. In this work, cellulose has been extracted from vegetable pomace through subsequent leaching and bleaching processes, which has been further used in the development of non-porous composite film along with green-synthesised Copper nanoparticles(Cu-NPs) and chitosan. The morphology, crystallinity, and functional group analysis of developed materials were characterised by scanning electron microscopy (SEM), X-ray diffraction (XRD), and infrared spectroscopy (FT-IR). On the basis of characterisation, Cu-NPs were observed in the range of 60–80&#xa0;nm (below 100&#xa0;nm), which were synthesised via greener root from vegetable pomace. These bio-nanocomposite films have shown significant antibacterial properties that inhibit various microbes’ growth on the film surfaces. Contact angle measurement by liquid drop method indicated that the composite prepared by Cu-NPs, chitosan and Cellulose have shown better hydrophobicity by showing contact angle of about 64° and making it suitable for use in food packaging due to less absorbency of moisture. The tensile strength and biodegradability tests strengthen their uses. Biodegradation test was conducted for about 4 weeks and more than 50% degradation was obtained. The results demonstrated strong potential for use as an effective and sustainable reinforcement material for bio-composite film preparation.</p>

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Development of antibacterial biodegradable nanocomposite film by blending copper nanoparticles (CuNPs) and cellulose mediated through vegetable pomace with chitosan and PVA

  • 期刊论文

  • 发表日期：

    2026年4月29日

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  • Ajay Singh,
  • Suman Samant,
  • Gaurav Singh Bisht,
  • Aarti Bhatt,
  • Sonu Dwivedi

摘要

In 21st century, biopolymers are getting attention in food packaging industries as they are biodegradable and non-toxic to the environment. While over the past decades, plastics have been used as a major food packaging material but due to its toxic effects, there is a need to develop eco-friendly, sustainable materials that can be used safely in food packaging. In this work, cellulose has been extracted from vegetable pomace through subsequent leaching and bleaching processes, which has been further used in the development of non-porous composite film along with green-synthesised Copper nanoparticles(Cu-NPs) and chitosan. The morphology, crystallinity, and functional group analysis of developed materials were characterised by scanning electron microscopy (SEM), X-ray diffraction (XRD), and infrared spectroscopy (FT-IR). On the basis of characterisation, Cu-NPs were observed in the range of 60–80 nm (below 100 nm), which were synthesised via greener root from vegetable pomace. These bio-nanocomposite films have shown significant antibacterial properties that inhibit various microbes’ growth on the film surfaces. Contact angle measurement by liquid drop method indicated that the composite prepared by Cu-NPs, chitosan and Cellulose have shown better hydrophobicity by showing contact angle of about 64° and making it suitable for use in food packaging due to less absorbency of moisture. The tensile strength and biodegradability tests strengthen their uses. Biodegradation test was conducted for about 4 weeks and more than 50% degradation was obtained. The results demonstrated strong potential for use as an effective and sustainable reinforcement material for bio-composite film preparation.