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Intrinsically Antibacterial Carbon Nanoparticles Optimally Entangle into Polymeric Films to Produce Composite

Neha Yadav^1,2, Debmalya Roy², Santosh K Misra^1,3

¹Department of Biological Sciences & Bioengineering, Indian Institute of Technology Kanpur, Kalyanpur, UP 208016, India.

|November 18, 2024

Summary

Researchers developed a novel, high-performance polylactic acid (PLA) film with integrated hemp fiber-derived carbon nanoparticles (hf-CNPs). This antibacterial packaging film demonstrates superior mechanical and biodegradation properties, offering a sustainable alternative to conventional PLA composites.

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Area of Science:

Materials Science
Polymer Science
Nanotechnology

Background:

Maintaining product quality in food, pharmaceuticals, and sustainability relies on optimal storage and advanced packaging.
Conventional packaging often lacks inherent antibacterial properties, necessitating alternative solutions.

Purpose of the Study:

To develop an intrinsically antibacterial and high-performance polylactic acid-based film (hpp-PLA-film).
To investigate the efficacy of incorporating hemp fiber-derived carbon nanoparticles (hf-CNPs) into PLA films for enhanced properties.

Main Methods:

Microwave-assisted synthesis of carbon nanoparticles from hemp fibers (hf-CNPs).
Fabrication of hpp-PLA films with varying hf-CNP concentrations (0.05% and 0.5% w/w).
Comprehensive characterization using physicochemical, thermal, mechanical, antibacterial, dissolution, and biodegradation assessments.

Main Results:

The hpp-PLA films exhibited significant antibacterial activity, outperforming kanamycin over extended periods.
The hpp-PLA-0.05-film demonstrated superior mechanical strength, antibacterial efficacy, dissolution resistance, and physical impact sustainability.
Biodegradation properties were observed in the developed hpp-PLA films.

Conclusions:

The developed hpp-PLA-0.05-film presents a promising, sustainable alternative to conventional PLA packaging composites.
The integration of hf-CNPs effectively enhances the performance and functionality of PLA-based packaging materials.