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<p>Nanoparticles (NPs) play a vital role in food packaging, enhancing the film’s properties such as UV protective, antibacterial activity, hydrophobicity, etc. This characteristic behaviour of NPs deviates with its molar concentration. Hence, in this study, ZnO NPs were synthesized with variant molar concentrations and were used in developing eco-sustainable packaging films (0&#xa0;M - AF0, 0.2&#xa0;M - AF1, 0.4&#xa0;M - AF2, 0.6&#xa0;M - AF3) using <i>Cucurbita maxima</i> peel (CMP) extract and low-content polyvinyl alcohol (2.2 wt%). The hydrodynamic size of ZnO NPs was estimated using DLS and zeta potential. The crystalline size of the ZnO NPs was estimated using XRD as 29, 41, and 31&#xa0;nm, respectively. FTIR analysis showed the presence of polysaccharides and amines in nanocomposite films, indicating the enhancement due to CMP incorporation. Sustainability and stiffness of the films exhibited enhanced mechanical properties with increased molarity of ZnO NPs; the tensile strength of the films varies between 4.11 and 11.03&#xa0;MPa, and elongation at break upsurges from 280.51 to 623.75. All the NP-embedded films had UV blocking nature (&gt; 70%). The band gap &gt; 3&#xa0;eV using UV absorption and dielectric constants (&gt; 15) confirms the insulating property of the films. The film’s water vapor transmission rate decreases from 314.53 to 254.05&#xa0;g/m<sup>2</sup>/day. A high degree of solubility and increasing hydrophobicity of the films indicate their eco-friendly nature, durability, and potential usage of bio-plastic in the marine environment.</p>

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Investigation on molar variant metal oxide Nanoparticle-based sustainable films functionalised with pumpkin Peel

  • 期刊论文

  • 发表日期：

    2026年2月2日

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  • Rubalya Valantina Sathianathan,
  • Jasline Joseph,
  • K. Anusuya,
  • R. K. Janane

摘要

Nanoparticles (NPs) play a vital role in food packaging, enhancing the film’s properties such as UV protective, antibacterial activity, hydrophobicity, etc. This characteristic behaviour of NPs deviates with its molar concentration. Hence, in this study, ZnO NPs were synthesized with variant molar concentrations and were used in developing eco-sustainable packaging films (0 M - AF0, 0.2 M - AF1, 0.4 M - AF2, 0.6 M - AF3) using Cucurbita maxima peel (CMP) extract and low-content polyvinyl alcohol (2.2 wt%). The hydrodynamic size of ZnO NPs was estimated using DLS and zeta potential. The crystalline size of the ZnO NPs was estimated using XRD as 29, 41, and 31 nm, respectively. FTIR analysis showed the presence of polysaccharides and amines in nanocomposite films, indicating the enhancement due to CMP incorporation. Sustainability and stiffness of the films exhibited enhanced mechanical properties with increased molarity of ZnO NPs; the tensile strength of the films varies between 4.11 and 11.03 MPa, and elongation at break upsurges from 280.51 to 623.75. All the NP-embedded films had UV blocking nature (> 70%). The band gap > 3 eV using UV absorption and dielectric constants (> 15) confirms the insulating property of the films. The film’s water vapor transmission rate decreases from 314.53 to 254.05 g/m2/day. A high degree of solubility and increasing hydrophobicity of the films indicate their eco-friendly nature, durability, and potential usage of bio-plastic in the marine environment.