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Modification of PLA-Based Films by Grafting or Coating
Aleksandra Miletić1, Ivan Ristić1, Maria-Beatrice Coltelli2,3
1Faculty of Technology Novi Sad, University of Novi Sad, 21000 Novi Sad, Serbia.
Journal of Functional Biomaterials
|May 13, 2020
Summary
Researchers modified poly(lactide) (PLA) to incorporate natural chitin-lignin nanoparticles. This surface modification enhances compatibility for biomedical and cosmetic applications.
Area of Science:
- Materials Science
- Polymer Chemistry
- Biotechnology
Background:
- Increasing demand for natural polymers in cosmetic, biomedical, and sanitary sectors.
- Need for incorporating active components to achieve specific product functionalities.
- Challenge in ensuring compatibility between hydrophobic and hydrophilic materials.
Purpose of the Study:
- To functionalize poly(lactide) (PLA) with antiseptic and anti-inflammatory chitin nanofibrils-nanolignin complexes.
- To improve the interaction between hydrophobic PLA and hydrophilic nanoparticle complexes.
- To develop materials for biomedical, cosmetic, and sanitary applications.
Main Methods:
- Chemical modification of PLA using the "grafting from" method with lactide oligomers.
- Preparation of active coatings using modified and unmodified chitin-lignin nanoparticle complexes.
- Application of coatings on extruded PLA-based sheets and subsequent characterization.
Main Results:
- Successful functionalization of PLA with chitin-lignin nanoparticle complexes.
- Enhanced interaction between the modified hydrophobic PLA matrix and hydrophilic nanoparticles.
- Characterization of chemical, thermal, and mechanical properties of the modified PLA sheets.
Conclusions:
- The developed surface modification strategy effectively integrates natural nanoparticles into PLA.
- The functionalized PLA shows potential for advanced applications in the biomedical, cosmetic, and sanitary fields.
- This approach addresses the hydrophobicity/hydrophilicity challenge in natural polymer composites.
