Effect of Plasticizer Content on Mechanical and Water Vapor Permeability of Maize Starch/PVOH/Chitosan Composite Films

Packaging materials based on biodegradable polymers are a viable alternative to replace conventional plastic packaging from fossil origin. The type of plasticizer used in these materials affects their functionality and performance. The effect of different plasticizers such as glycerol (GLY), sorbito...

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Bibliographic Details
Published in:Materials 2022-02, Vol.15 (4), p.1274
Main Authors: Caicedo, Carolina, Díaz-Cruz, Claudio Alonso, Jiménez-Regalado, Enrique Javier, Aguirre-Loredo, Rocio Yaneli
Format: Article
Language:English
Subjects:
Alcohol
Biodegradability
Chitosan
Elongation
Flexibility
Glycerol
Humidity
Mechanical properties
Morphology
Packaging
Permeability
Plasticizers
Polyethylene glycol
Polymer blends
Sorbitol
Standard deviation
Thermal resistance
Thermogravimetric analysis
Variance analysis
Water vapor
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Summary:Packaging materials based on biodegradable polymers are a viable alternative to replace conventional plastic packaging from fossil origin. The type of plasticizer used in these materials affects their functionality and performance. The effect of different plasticizers such as glycerol (GLY), sorbitol (SOR), and poly(ethylene glycol) (PEG) in concentrations of 5%, 10%, and 15% ( / ) on the structural features and functional properties of starch/PVOH/chitosan films was evaluated. The incorporation of a plasticizer increased the thickness of the biodegradable composite films. Furthermore, the material plasticized with 30% ( / ) sorbitol had the highest elongation at break, lowest water vapor permeability, and better thermal resistance. The results obtained in this study suggest that maize starch/PVOH/chitosan biodegradable composite films are a promising packaging material, and that sorbitol is the most suitable plasticizer for this formulation.
ISSN:1996-1944
1996-1944
DOI:10.3390/ma15041274