Four different strategies for mitigating the highly hydrophilic nature of flax fibers were investigated with a view to increase their compatibility with apolar polypropylene. The effects of two carbon nanostructures (graphene nanoplatelets (GNPs) and carbon nanotubes (CNTs)), of a chemical modification with a fatty acid (stearic acid), and of maleated polypropylene on interfacial adhesion, mechanical properties (tensile and flexural), and thermal stability (TGA) were compared. The best performance was achieved by a synergistic combination of GNPs and maleated polypropylene, which resulted in an increase in tensile strength and modulus of 42.46% and 54.96%, respectively, compared to baseline composites. Stearation proved to be an effective strategy for increasing the compatibility with apolar matrices when performed in an ethanol solution with a 0.4 M concentration. The results demonstrate that an adequate selection of surface modification strategies leads to considerable enhancements in targeted properties.

Effect of carbon nanostructures and fatty acid treatment on the mechanical and thermal performances of flax/polypropylene composites / Russo, P.; Vitiello, L.; Sbardella, F.; Santos, J. I.; Tirillo, J.; Bracciale, M. P.; Rivilla, I.; Sarasini, F.. - In: POLYMERS. - ISSN 2073-4360. - 12:2(2020). [10.3390/polym12020438]

Effect of carbon nanostructures and fatty acid treatment on the mechanical and thermal performances of flax/polypropylene composites

Sbardella F.
;
Tirillo J.;Bracciale M. P.;Sarasini F.
2020

Abstract

Four different strategies for mitigating the highly hydrophilic nature of flax fibers were investigated with a view to increase their compatibility with apolar polypropylene. The effects of two carbon nanostructures (graphene nanoplatelets (GNPs) and carbon nanotubes (CNTs)), of a chemical modification with a fatty acid (stearic acid), and of maleated polypropylene on interfacial adhesion, mechanical properties (tensile and flexural), and thermal stability (TGA) were compared. The best performance was achieved by a synergistic combination of GNPs and maleated polypropylene, which resulted in an increase in tensile strength and modulus of 42.46% and 54.96%, respectively, compared to baseline composites. Stearation proved to be an effective strategy for increasing the compatibility with apolar matrices when performed in an ethanol solution with a 0.4 M concentration. The results demonstrate that an adequate selection of surface modification strategies leads to considerable enhancements in targeted properties.
adhesion; flax fibers; polymer matrix composites; surface treatments
01 Pubblicazione su rivista::01a Articolo in rivista
Effect of carbon nanostructures and fatty acid treatment on the mechanical and thermal performances of flax/polypropylene composites / Russo, P.; Vitiello, L.; Sbardella, F.; Santos, J. I.; Tirillo, J.; Bracciale, M. P.; Rivilla, I.; Sarasini, F.. - In: POLYMERS. - ISSN 2073-4360. - 12:2(2020). [10.3390/polym12020438]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1392763
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