Synthesis and characterization of polymeric composites with Cascabela thevetia incorporated zinc nanoparticles: Food packaging applications

Shwetarani Rajamani, Ramesh Gani, Shamprasad Varija Raghu, Avinash Kudva, Murigendra Hiremath, Apsara Kavital, Nityasree Ramanath, Anand Nasalapure

Research output: Contribution to journalArticlepeer-review


Background: Most food packaging materials are non-biodegradable and do not protect against microbial growth. In the present study, we have synthesized and characterized environmentally friendly packaging material using nanotechnology. Objective: Cascabela thevetia incorporated zinc nanoparticles and PVP/KC blended films of various ratios were synthesized using the solvent casting method. The nanoparticles were tested for their physical and chemical properties. The antimicrobial activity of films and an in vivo toxicity studies were performed using Drosophila as a model system. Results: The thickness of blend films increases as the concentration of nanoparticles is enhanced. The UV–visible spectra of prepared ZnO nanoparticles exhibited maximum absorbance wavelength (λmax) at 360–380 nm. The nanocomposite films' TS and EB and Y were also increased. Scanning electron microscopy (SEM) analysis suggested that all the films were homogenous, crack-free, and possessed continuous bubble-free surfaces. FT-IR results showed chemical interaction between PVP/KC and Zinc oxide nanoparticles. Fifth sample showed greater antibacterial activity. A toxicity study showed that the flies survived >92% in all the samples up to 10 days of continuous feeding, which signifies that the material has low toxicity. Conclusion: Nanocomposite films can be used as antimicrobial food packaging material to enhance the shelf-life of food.

Original languageEnglish (US)
Article numbere54528
JournalJournal of Applied Polymer Science
Issue number41
StatePublished - Nov 5 2023

All Science Journal Classification (ASJC) codes

  • General Chemistry
  • Surfaces, Coatings and Films
  • Polymers and Plastics
  • Materials Chemistry

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