Conducting fabrics of polyester coated with polypyrrole and doped with graphene oxide

• Autor(a) principal: Molina, J.
• Data de Publicação: 2015
• Outros Autores: Zille, Andrea, Fernández, J., Souto, A. Pedro, Bonastre, J., Cases, F.
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
• Texto Completo: http://hdl.handle.net/1822/35262
• topic: Polypyrrole; Graphene oxide; Conducting fabric; X-ray photoelectron spectroscopy (XPS); Electrochemical impedance spectroscopy (EIS); Scanning electrochemical microscopy (SECM); Engenharia e Tecnologia::Engenharia dos Materiais; Science & Technology

Polyester (PES) has been coated with polypyrrole (PPy) to produce conducting fabrics. Graphene oxide (GO) has been used in different concentrations (10, 20 and 30% weight) as counter ion to neutralize the positive charges of the PPy structure. Fourier transform infrared spectroscopy with attenuated total reflection (FTIR-ATR), energy dispersive X-ray (EDX) and X-ray photoelectron spectroscopy (XPS) of the PPy/GO powders corroborated the incorporation of GO as counter ion due to the presence of O in the EDX spectrum, as well as an excess of C, arising from GO contribution. The doping level (N+/N) decreased with the GO content. Field emission scanning electron microscopy (FESEM) showed the formation of the PPy/GO coating and the incorporation of GO in the composite. Electrochemical impedance spectroscopy (EIS) in solid state and solution, cyclic voltammetry (CV) and scanning electrochemical microscopy (SECM) were used to test the electrical properties and electroactivity of the fabrics. There was a decrease in the electrical properties and electroactivity as the GO content increased. The conductivity of the fabrics could be tuned by varying the GO content.