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The Effect of the Process on Mechanical Properties of Polylactic Acid-Date Palm Leaf Fibers Composite Films Produced By Extrusion Blowing

Fatma Kharrat1, Rania Chaari1, Mohamed Khlif1, Loic Hilliou2, José A. Covas2, Mohamed Haboussi3,*, Hedi Nouri1, Chedly Bradai1
National School of Engineers of Sfax (ENIS), Laboratory of Electromechanical Systems (LASEM), B.P.W. 3038, Sfax, Tunisia.
Institute for Polymers and Composites, University of Minho, Guimarães, Portugal.
Laboratoire des Sciences des Procédés et des Matériaux (LSPM), CNRS UPR 3407, Université Paris 13, Sorbonne-Paris-Cité, 93430, Villetaneuse, France.
*Corresponding Author: Mohamed Haboussi. Email: .

Journal of Renewable Materials 2019, 7(9), 891-901. https://doi.org/10.32604/jrm.2019.06827

Abstract

Biocomposite films prepared with melt compounding and film blowing have become a new trend in plastic research to deliver more eco-friendly packages. Polylactic acid (PLA) was melt compounded with minimally processed date palm leaf fiber (DPLF) and converted into films by blown film extrusion. The compounding was done in order to enhance the film mechanical properties in one hand, and to decrease the film production cost in the other hand. In this present study, a reference PLA film and films with 1%, 2%, and 5% of DPLF (weight %) were produced with different process parameters. The spatial variations in films thickness and lay flat width indicate that the addition of DPLF up to 2% enhances the bubble stability for the tested process parameters. However, the composite with 5% DPLF shows nearly the same processability window as the neat PLA. The structural and mechanical characterizations of films suggest a reinforcing effect of the PLA matrix up to 2% of fiber (with an optimum at 1%). Larger DPLF loading leads to depressed and more anisotropic mechanical properties, related to an increased density of defects at the fiber-PLA fragile interface and to a DPLF-induced enhanced PLA thermal degradation and amorphous phase orientation.

Keywords

PLA, palm leaf fibers, biocomposites, film blowing

Cite This Article

Kharrat, F., Chaari, R., Khlif, M., Hilliou, L., Covas, J. A. et al. (2019). The Effect of the Process on Mechanical Properties of Polylactic Acid-Date Palm Leaf Fibers Composite Films Produced By Extrusion Blowing. Journal of Renewable Materials, 7(9), 891–901.

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This work is licensed under a Creative Commons Attribution 4.0 International License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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