| About this Abstract |
| Meeting |
2024 ASC Technical Conference, US-Japan Joint Symposium, D30 Meeting
|
| Symposium
|
2024 ASC Technical Conference, US-Japan Joint Symposium, D30 Meeting
|
| Presentation Title |
The Effect of Various Processing Parameters on the Mechanical Properties of Doctor-Bladed Graphene Oxide Films |
| Author(s) |
Athena Aber, Gehan C Jayatilaka, Aaron Kang, Mehran Tehrani |
| On-Site Speaker (Planned) |
Athena Aber |
| Abstract Scope |
Graphene oxide films have shown promise to be strong, tough, and stiff super-materials, but most current fabrication methods suffer from a lack of scalability. In this study, graphene oxide dispersion is used to fabricate films with thickness on the order of a few microns using doctor blading, a relatively scalable approach. Various processing parameters, including pH, concentration, substrate, and particle size/oxidation are perturbed to analyze their effects on both the structure and properties of the resulting film. The initial graphene oxide dispersions are imaged within capillary tubes under polarizing optical microscopy to characterize the liquid crystal textures under different dispersion parameters. The graphene oxide dispersions are doctor-bladed to form continuous films, which are then removed from the substrate and tested to failure in a tensile apparatus. Finally, the fracture surface is imaged under scanning electron micros-copy to provide insight into the processing-structure-properties relations within doctor-bladed graphene oxide films. This information can be used to adapt previous work with lab-scale fabrication methods (vacuum filtration, for example) to doctor blading, understand the assembly process of graphene oxide dispersions, and advance knowledge on the behavior of liquid crystalline dispersions more broadly. |
| Proceedings Inclusion? |
Definite: Post-meeting proceedings |