info:eu-repo/semantics/article
Chitin based hybrid composites reinforced with graphene derivatives: a nanoscale study
Fecha
2015-07Registro en:
González, Joaquín Antonio; Villanueva, María Emilia; Peralta Ramos, María Luz; Pérez, Claudio Javier; Piehl, Lidia Leonor; et al.; Chitin based hybrid composites reinforced with graphene derivatives: a nanoscale study; Royal Society of Chemistry; RSC Advances; 5; 78; 7-2015; 63813-63820
2046-2069
Autor
González, Joaquín Antonio
Villanueva, María Emilia
Peralta Ramos, María Luz
Pérez, Claudio Javier
Piehl, Lidia Leonor
Copello, Guillermo Javier
Resumen
In this work, we present two novel nanostructured hybrid materials based on a chitin matrix loaded with increasing amounts of graphene oxide and reduced graphene oxide nanosheets (nGO and rGO, respectively). Both kinds of material (Chi:nGO and Chi:rGO) were studied using different spectroscopic and rheological techniques with the aim of understanding the interaction mechanism between chitin and nGO/rGO and explaining how the type of filler and its proportion affects its reinforcement. The production of these hybrids represents not only the obtention of low-cost materials with mechanical resistance but also a good opportunity for developing materials with several applications according to their composition. The nGO and rGO were characterised through FT-IR and ESR for the determination of the oxidation degree of each nanofiller. Then, the hybrids were spectroscopically analysed with FT-IR, ESR and SAXS which demonstrated that the components do not interact through covalent bonding and the nanosheets are well-dispersed among the chitin matrix. Finally, a rheological behavior assay was performed and its results were analysed in terms of G′ and η*. In short, all the results allowed us to conclude that nGO acts as a more efficient reinforcer than rGO due to the higher amount of hydrogen bonding established with chitin.