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Development of Hematite Nano Ellipsoids/Pectin Composite Films for Green Packaging Applications.

Srisowmeya Guruchandran¹, Bhagyashri Bharathi Rajendra Prasath¹, Swathi Sudhakar²

¹Polymer Engineering and Colloid Science Lab, Department of Chemical Engineering, Indian Institute of Technology Madras, Chennai 600036, India.

Langmuir : the ACS Journal of Surfaces and Colloids

|August 20, 2024

Summary

This study reinforced native pectin films with hematite nano ellipsoids (HNEs) to create eco-friendly packaging. The resulting composite films show improved mechanical strength, hydrophobicity, and barrier properties, offering a sustainable packaging solution.

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Area of Science:

Materials Science
Polymer Science
Nanotechnology

Background:

Synthetic packaging poses environmental and health risks.
Pectin is a promising eco-friendly biopolymer for packaging.
Native pectin films (NPF) have limitations: poor mechanical strength, high hydrophilicity, and inadequate barrier properties.

Purpose of the Study:

To enhance the properties of native pectin films for packaging applications.
To investigate the reinforcing effect of hematite nano ellipsoids (HNEs) on pectin films.
To develop a sustainable, biocompatible, and biodegradable packaging material.

Main Methods:

Incorporation of hematite nano ellipsoids (HNEs) as fillers into native pectin films.
Characterization of the mechanical, hydrophobic, thermal, barrier, and optical properties of the composite films.
Comparison of the performance of pectin-hematite composite films with native pectin films (NPF).

Main Results:

Pectin-hematite composite films showed a 35% increase in tensile strength compared to NPF.
Hydrophobicity improved, indicated by a 30° increase in contact angle.
Oxygen diffusion barrier properties increased 6-fold, and water vapor barrier properties increased 20%.

Conclusions:

Hematite nano ellipsoids (HNEs) effectively reinforce native pectin films (NPF).
The developed pectin-hematite composite films offer enhanced mechanical, hydrophobic, and barrier properties.
This research presents a viable sustainable, biocompatible, and biodegradable packaging material through biopolymer and nanoparticle engineering.