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Effect of Carbon Nanostructures and Fatty Acid Treatment on the Mechanical and Thermal Performances of Flax/Polypropylene Composites.
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- المؤلفون: Russo, Pietro1 (AUTHOR) ; Vitiello, Libera1 (AUTHOR) ; Sbardella, Francesca2 (AUTHOR) ; Santos, Jose I.3 (AUTHOR) ; Tirillò, Jacopo2 (AUTHOR) ; Bracciale, Maria Paola2 (AUTHOR) ; Rivilla, Iván2,4 (AUTHOR); Sarasini, Fabrizio2 (AUTHOR)
- المصدر:
Polymers (20734360). Feb2020, Vol. 12 Issue 2, p438. 1p. 12 Diagrams, 2 Charts, 7 Graphs.
- الموضوع:
- معلومة اضافية
- نبذة مختصرة :
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. [ABSTRACT FROM AUTHOR]
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