Electrospun Polybutylene Succinate Coatings for Sustainable Cardboard Packaging: Structure‐Property Relationships
2025
Vercasson, Allison | Prieto, Cristina | Gaucel, Sébastien | Gontard, Nathalie | Guillard, Valérie | Angellier-Coussy, Hélène | Lagaron, Jose | Ingénierie des Agro-polymères et Technologies Émergentes (UMR IATE) ; Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut Agro Montpellier ; Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Université de Montpellier (UM) | Instituto de Agroquímica y Tecnología de Alimentos - Institute of Agrochemistry and Food Technology [Valencia] (IATA-CSIC) | Consejo Superior de Investigaciones Cientificas [España] = Spanish National Research Council [Spain] (CSIC) | MICIN/AEI/10.13039/501100011033 by “ERDF A way of making Europe” [project number PID2021-128749OB-C31], | University of Montpellier through the excellence program I-SITE and the APP EXPLORE #4 for the funding of the research mobility | ANR-16-IDEX-0006,MUSE,MUSE(2016)
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Show more [+] Less [-]English. Producing thin biopolymer‐coated paper and cardboard is essential for a large range of applications, such as food packaging, as it allows to maintain flexibility while reducing the environmental impact and enhancing barrier properties. This study investigates electrospinning to generate polybutylene succinate (PBS)‐coated cardboards with contrasted structures (i.e., different thicknesses of the individual layers). Four contrasted structures of PBS‐coated cardboards are produced, presenting low polymer thickness remaining on top of the substrate (10 to 25 µm) but differing in the thickness of their characteristic layers (including the impregnated layer). The effect of the electrospinning parameters (deposition time, method (direct vs indirect)) and annealing parameters on polymer‐coated cardboards’ structures are investigated. The annealing pressure only reduced the coated cardboard thickness, while the electrospinning method influenced the overall structure by affecting both the thickness of the impregnated layer and of the remaining layer of cardboard. The mechanical properties tested by tensile test are maintained or enhanced after coating while oxygen barrier properties are largely enhanced for some samples. Decreasing the impregnated layer thickness resulted in a Young's modulus increase (+3 to +23%) and a decrease in stress at break (−40 to −70%), highlighting the impact of polymer‐coated cardboards's structures on their mechanical properties.
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