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Electrospun Polybutylene Succinate Coatings for Sustainable Cardboard Packaging: Structure-Property Relationships
Allison Vercasson1, Cristina Prieto2, Sébastien Gaucel1
1JRU IATE, University of Montpellier, INRAE, Institut Agro, 2 Place Pierre Viala, Montpellier, 34060, France.
Macromolecular Rapid Communications
|May 13, 2025
Summary
This study explores electrospinning to create polybutylene succinate (PBS)-coated cardboard for packaging. Tailoring layer thickness impacts mechanical and barrier properties, enhancing performance for sustainable applications.
Area of Science:
- Materials Science
- Polymer Science
- Sustainable Packaging
Background:
- Biopolymer-coated paper and cardboard offer sustainable alternatives for food packaging, enhancing barrier properties while maintaining flexibility.
- Electrospinning is a promising technique for creating thin, functional coatings on various substrates.
Purpose of the Study:
- To investigate the electrospinning of polybutylene succinate (PBS) onto cardboard, creating structures with varied layer thicknesses.
- To analyze the influence of electrospinning and annealing parameters on the structure of PBS-coated cardboard.
- To evaluate the impact of these structural variations on mechanical and oxygen barrier properties.
Main Methods:
- Electrospinning of polybutylene succinate (PBS) onto cardboard substrates using direct and indirect methods.
- Controlled variation of deposition time and annealing parameters (pressure).
- Characterization of coated cardboard structures, including layer thicknesses (impregnated and remaining).
- Mechanical testing (tensile tests) and oxygen barrier property assessment.
Main Results:
- Four distinct PBS-coated cardboard structures were produced with varying impregnated and remaining layer thicknesses (10-25 µm polymer thickness).
- Electrospinning method significantly influenced the overall structure, affecting both impregnated and remaining layer thicknesses.
- Annealing pressure primarily reduced overall coated cardboard thickness.
- Mechanical properties were maintained or improved; oxygen barrier properties showed significant enhancement in some samples.
- Decreasing impregnated layer thickness increased Young's modulus (+3-23%) but decreased stress at break (-40-70%).
Conclusions:
- The structure of electrospun PBS-coated cardboard, particularly the impregnated layer thickness, critically impacts mechanical properties.
- Electrospinning parameters offer control over coating structure, enabling tailored performance for enhanced barrier and mechanical characteristics.
- This research demonstrates a viable method for producing advanced, sustainable coated paper and cardboard materials.
