About this Abstract |
| Meeting |
2027 TMS Annual Meeting & Exhibition
|
| Symposium
|
Natural Fibers and Biocomposites
|
| Presentation Title |
MECHANICAL PROPERTIES OF GRAPHENE OXIDE COATED SEDGE FIBER-REINFORCED EPOXY COMPOSITES |
| Author(s) |
Lucas Mendonça Neuba, Belayne Marchi, Sergio Monteiro |
| On-Site Speaker (Planned) |
Lucas Mendonça Neuba |
| Abstract Scope |
Composite materials, particularly those with fiber-reinforced polymer matrices, align well with current demands for combining low density with high mechanical strength. This has driven numerous studies focused on incorporating lignocellulosic natural fibers into polymeric matrices. In this context, the present study proposes the use of graphene oxide (GO) coating sedge fibers (Cyperus malaccensis) as reinforcement in an epoxy matrix composite. The mechanical performance was evaluated through Izod and Charpy impact tests. Morphological analysis of the fractured surfaces was performed to assess the influence of fiber treatment on failure mechanisms, in particular delamination. This failure mechanism provides evidence of a weak interfacial adhesion and is commonly present in composites reinforced by natural fibers. The results revealed asignificant improvement in impact resistance due to the GO coating. For example, the treated fiber group showed the highest impact energies, with values of 117.68 ± 30.71 J/m (Izod) and 154.12 ± 33.77 J/m (Charpy). |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Composites, Nanotechnology, Mechanical Properties |