Article (Scientific journals)
Towards sustainable reprocessable structural composites: Benzoxazines as biobased matrices for natural fibers
Seychal, Guillem; Van Renterghem, Louis; Ocando, Connie et al.
2024In Composites. Part B, Engineering, 272, p. 111201
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Keywords :
A: Natural fiber composites; A: Polymer-matrix composites (PMCs); A: Resins; Covalent adaptive network; A.Polymer-matrix composites; A: natural fiber composite; A: polymer-matrix composite; A: polymer-matrix composites; A: resin; Adaptive networks; matrix; Natural fiber composites; Property; Ceramics and Composites; Mechanics of Materials; Mechanical Engineering; Industrial and Manufacturing Engineering
Abstract :
[en] In this work, we synthesized and investigated three fully biobased benzoxazine matrices containing exchangeable ester bonds for natural fiber composites. The thermoset properties were investigated and the transesterification behavior was assessed. The obtained polymers show high tunability. Using isosorbide as the starting building block, the thermoset exhibits a glass transition of 130 °C, a tensile modulus of 2.5 GPa, and thermal stability leading to degradation occurring after 270 °C with 31% char at 800 °C. All formulations stress relax under catalyst-free conditions within minutes with properties recovery superior to 80%. Finally, flax composites were manufactured. We highlight strong affinities between the matrices and the fibers through high mechanical performances with a modulus over 30 GPa and stress at break of 400 MPa in the longitudinal direction. 5 GPa modulus and 47 MPa stress at break were found in the transverse direction. Excellent fire retardancy properties, with self-extinguishment and UL-94 V1 classification were obtained for the isosorbide-based/flax composite. The obtained composites were able to be welded with comparable results to glued ones, paving the way to processable laminates and stable cured prepreg perfectly suited for transportation-engineered applications.
Disciplines :
Chemistry
Author, co-author :
Seychal, Guillem  ;  Université de Mons - UMONS > Faculté des Sciences > Service des Matériaux Polymères et Composites
Van Renterghem, Louis;  Laboratory of Polymeric and Composite Materials, Center of Innovation and Research in Materials and Polymers (CIRMAP), University of Mons, Mons, Belgium
Ocando, Connie;  Laboratory of Polymeric and Composite Materials, Center of Innovation and Research in Materials and Polymers (CIRMAP), University of Mons, Mons, Belgium
Bonnaud, Leila ;  Université de Mons - UMONS > Unités externes > Materia Nova ASBL ; Materia Nova asbl, Parc Initialis, Mons, Belgium
Raquez, Jean-Marie  ;  Université de Mons - UMONS > Faculté des Sciences > Service des Matériaux Polymères et Composites
Language :
English
Title :
Towards sustainable reprocessable structural composites: Benzoxazines as biobased matrices for natural fibers
Publication date :
01 March 2024
Journal title :
Composites. Part B, Engineering
ISSN :
1359-8368
eISSN :
1879-1069
Publisher :
Elsevier Ltd
Volume :
272
Pages :
111201
Peer reviewed :
Peer Reviewed verified by ORBi
Research unit :
S816 - Matériaux Polymères et Composites
Research institute :
Matériaux
European Projects :
H2020 - 955700 - NIPU - SYNTHESIS, CHARACTERIZATION, STRUCTURE AND PROPERTIES OF NOVEL NONISOCYANATE POLYURETHANES
Funders :
Union Européenne [BE]
Funding text :
The authors wish to thank the Wallonia-Brussels Federation, Wallonia, and the European Community for general support in the frame of European Union's Horizon 2020 research and innovation program under the Marie Skłodowska-Curie grant agreement No. 955700 (NIPU-EJD project) and the Concerted Research Action program (ARC 2020 - PROCOMAG project). L.B. also want to thank the INTERREG V FWVL program (ATHENS project) and PIT AERO (WINGS project). JMR is a Senior FRS-FNRS Research Associate.The authors wish to thank the Wallonia-Brussels Federation, Wallonia, and the European Community for general support in the frame of European Union’s Horizon 2020 research and innovation program under the Marie Skłodowska-Curie grant agreement No. 955700 (NIPU-EJD project) and the Concerted Research Action program (ARC 2020 - PROCOMAG project). L.B. also want to thank the INTERREG V FWVL program (ATHENS project) and PIT AERO (WINGS project). JMR is a Senior FRS-FNRS Research Associate.
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