Graphene derivatives obtained by electrochemical exfoliation for use in pressure sensitive nanocomposite

• Grant number: 19/23359-0
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Start date: January 01, 2020
• End date: January 31, 2021
• Field of knowledge: Engineering - Materials and Metallurgical Engineering - Nonmetallic Materials
• Principal Investigator: Emerson Sarmento Gonçalves
• Grantee: Maria Eduarda Martins Duque
• Host Institution: Instituto de Aeronáutica e Espaço (IAE). Departamento de Ciência e Tecnologia Aeroespacial (DCTA). Ministério da Defesa (Brasil). São José dos Campos , SP, Brazil

Abstract

The main appeal of this project is to increase the safety of air navigation by developing graphene derivative composites in metalloporphyrin paints, which will be used as sensory materials. Polymeric materials have unique characteristics that enable numerous applications. However, there are limitations to the use of these materials, such as the fact that most of them are insulating, making it difficult to use in sensors. In order to extend the use of UniFIB® UF: 400-470 metalloporphyrinic paint, which is pressure sensitive and used in aerodynamic studies, it is proposed to add a graphene derivative to generate an electrical signal motivated by the change in conduction due to Oxygen adsorption / desorption at platinum sites that exist in platinofluoroporphyrinic molecules of the ink. Thus, the obtained composite can be used in redundant aerospace systems. Graphene and its derivatives are in evidence in many areas, and are able to assist in mechanical, optical and electrical properties of composites. Thus, the graphene derivatives obtained by the Hummers Method and by Electrochemical Graphite Exfoliation will be studied in order to produce homogeneous and satisfactorily conductive composites.

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

DE SOUZA, CAMILA BRITO; MARTINS DUQUE, MARIA EDUARDA; FERREIRA, ANDERSON; DE ARRUDA, MILENA NAKAGAWA; DE LIMA ALMEIDA, DALVA ALVES; FONTANA, LUIS CESAR; MIYAKAWA, WALTER; GONCALVES, EMERSON SARMENTO. Poly-(fluoro isopropyl butyl methacrylate)/graphene-based sensitive oxygen nanocomposite: Electrical measurements and chemical interaction in variable pressure. MATERIALS TODAY COMMUNICATIONS, v. 25, DEC 2020. (19/23359-0)