| Autor: |
Costa UO; Materials Science Department of Military Institute of Engineering-IME, Rio de Janeiro 22290-270, Brazil., Garcia Filho FDC; Materials Science Department of Military Institute of Engineering-IME, Rio de Janeiro 22290-270, Brazil., Río TG; Durability and Mechanical Integrity of Structural Materials Group (DIMME), School of Experimental Sciences and Technology, Rey Juan Carlos University, C/Tulipán, s/n. Móstoles, 28933 Madrid, Spain., Rodrigues JGP; Catalysis Laboratory for Polymerization, Recycling and Biodegradable Polymers (LCPRB), Professor Eloisa Mano Macromolecules Institute-IMA, Rio de Janeiro 21941-598, Brazil., Simonassi NT; Materials Science Department of State University of Northern Rio de Janeiro-UENF, Campos dos Goytacazes, Rio de Janeiro 28013-602, Brazil., Monteiro SN; Materials Science Department of Military Institute of Engineering-IME, Rio de Janeiro 22290-270, Brazil., Nascimento LFC; Materials Science Department of Military Institute of Engineering-IME, Rio de Janeiro 22290-270, Brazil. |
| Abstrakt: |
Natural lignocellulosic fibers (NLFs) have been used as a reinforcement for polymer matrix composites in the past couple of decades. Their biodegradability, renewability, and abundance make them appealing for sustainable materials. However, synthetic fibers surpass NLFs in mechanical and thermal properties. Combining these fibers as a hybrid reinforcement in polymeric materials shows promise for multifunctional materials and structures. Functionalizing these composites with graphene-based materials could lead to superior properties. This research optimized the tensile and impact resistance of a jute/aramid/HDPE hybrid nanocomposite by the addition of graphene nanoplatelets (GNP). The hybrid structure with 10 jute/10 aramid layers and 0.10 wt.% GNP exhibited a 2433% increase in mechanical toughness, a 591% increase in tensile strength, and a 462% reduction in ductility compared to neat jute/HDPE composites. A SEM analysis revealed the influence of GNP nano-functionalization on the failure mechanisms of these hybrid nanocomposites. |
