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Tailoring Gelatin Films: Functionality, Stability, and Beyond Biodegradability.

Nikita Bhardwaj¹, Mohd Tashfeen Ashraf², Jaya Maitra¹

¹Department of Applied Chemistry, University School of Vocational and Applied Sciences, Gautam Buddha University, Greater Noida, India.

|December 16, 2024

Summary

This study enhanced biodegradable gelatin films using glycerol, citric acid, and zinc oxide, improving properties like solubility and mechanical strength. The modified films also effectively removed copper ions, showing promise for environmental remediation.

Keywords:

absorption biodegradable gelatin heavy metal swelling

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Area of Science:

Materials Science
Polymer Chemistry
Environmental Science

Background:

Biodegradable polymers are crucial for sustainable material development.
Gelatin films offer potential but require property enhancement for wider applications.
Plasticizers and cross-linkers are key to tailoring film characteristics.

Purpose of the Study:

To enhance biodegradable gelatin films using glycerol, citric acid, and zinc oxide.
To evaluate the impact of these additives on film properties and functionality.
To explore the films' potential in heavy metal ion adsorption.

Main Methods:

Incorporation of glycerol (plasticizer), citric acid, and zinc oxide (cross-linkers) into gelatin films.
Characterization of film properties: solubility, swelling, thickness, pH, mechanical, thermal, and UV-Vis absorbance.
Assessment of biodegradability through soil burial tests.
Evaluation of copper (II) ion adsorption from acidic solutions.

Main Results:

Significant improvements in solubility, swelling, thickness, pH, mechanical, and thermal properties were observed.
Films exhibited complete water solubility and UV-Vis absorbance between 280-480 nm.
Soil burial tests confirmed complete degradation within 15 days.
Effective adsorption of copper (II) ions from acidic solutions was demonstrated.

Conclusions:

The combination of glycerol, citric acid, and zinc oxide effectively enhances biodegradable gelatin films.
Modified films possess desirable properties for various applications, including environmental remediation.
Tailored additive combinations offer a viable strategy for developing functional biodegradable materials.