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Plasticized agarose films: A physicochemical, mechanical and thermal study.
Creston A Singer1, Hajara Abdul-Karim2, Kyle Printon3
1Center for Computational and Integrative Biology, Rutgers University, Camden, NJ 08102, USA.
International Journal of Biological Macromolecules
|February 24, 2025
Summary
Plasticizers like glycerol significantly enhance the flexibility and stretchability of biodegradable agarose films by altering intermolecular interactions. This research offers insights into tailoring material properties for advanced applications.
Area of Science:
- Materials Science
- Polymer Chemistry
Background:
- Agarose films are biodegradable and biocompatible but lack flexibility at low moisture.
- Plasticizers can improve the mechanical properties of agarose films.
Purpose of the Study:
- To investigate the effects of four plasticizers (sucrose, urea, glucose, glycerol) on agarose film properties.
- To understand how plasticizers influence intermolecular interactions and material performance.
Main Methods:
- Preparation of agarose-based composite films with varying plasticizer concentrations.
- Analysis using Fourier Transform Infrared Spectroscopy (FTIR), Thermogravimetric Analysis (TGA), X-ray Scattering, and tensile testing.
Main Results:
- Plasticizers significantly influenced the mechanical and thermal properties of agarose films.
- Glycerol and glucose, with high hydroxyl content and small molecular size, most effectively improved flexibility and stretchability.
- FTIR and X-ray Scattering revealed changes in intermolecular interactions and hydrogen bonding.
Conclusions:
- The effectiveness of plasticizers is linked to their hydroxyl content and molecular size, impacting hydrogen bonding within the agarose matrix.
- Understanding these interactions allows for precise tuning of agarose film properties.
