Preparation, thermal and mechanical properties of poly (ether-imide) composite reinforced with carbon nanotube buckypaper

Autor(es)

Ribeiro, Bruno ^{[1, 2]} ; Corredor, Jefersson A. R. ^[1] ; Ardila, Laura ^[1] ; Santos, Luis F. P. ^[2] ; Costa, Michelle L. ^[2] ; Rezende, Mirabel C. ^[1] ; Botelho, Edson C. ^[2]

Afiliação do(s) autor(es)

^[1] Univ Fed Sao Paulo, Inst Ciencia & Tecnol, Sao Jose Dos Campos, SP - Brazil

^[2] Univ Estadual Paulista, Dept Mat & Tecnol, Guaratinguete, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Journal of Applied Polymer Science; v. 137, n. 5 AUG 2019.
• Citações Web of Science: 3

Resumo

Vacuum filtration technique was employed in order to prepare multiwalled carbon nanotube buckypapers (MWCNT-BP) through a well-dispersed suspension of MWCNT/H2O with the aid of Triton X-100 surfactant. The obtained BP (buckypaper) was then infiltrated with a solution of poly (ether-imide) (PEI) under vacuum conditions. The visual inspection demonstrated the importance of the centrifugation procedure before the vacuum filtration of the suspension, revealing a smooth surface of the as-prepared buckypaper. Thermogravimetric experiments (TGA) and scanning electron microscopy analyses have demonstrated the role of isopropyl alcohol in the removal of Triton X-100 from the nanotube network. SEM observations of the cross-section view of the samples revealed a porous network of the fabricated BP, and an impregnated structure of the PEI/BP composite, suggesting a good interfacial bonding between MWCNT and PEI. Moreover, significant improvements were achieved in mechanical and thermal properties of PEI matrix by the incorporation of BP, as the increase of both the storage modulus (42%) and the T-g (11 degrees C) for the PEI/BP composite. TGA have shown a significant increase in the onset decomposition temperature of the polymer by the incorporation of the BP. (c) 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 48330. (AU)

• Processo FAPESP: 17/04740-0 - Obtenção e caracterização de compósitos nanoestruturados multifuncionais baseados em laminado de fibra de vidro/resina epóxi/buckypapers de nanotubos de carbono
• Beneficiário: Bruno Ribeiro
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado