resumo
The main objective of this research centered on investigating the effect of the addition of multi-walled carbon nanotubes (MWCNTs) on the mechanical and thermal properties of curaua-fiber-reinforced composites. The MWCNTs were added either to the fiber surface or into the resin matrix as the second reinforcing phase. The MWCNT-modified curaua fibers as well as raw fibers were characterized using a single-fiber tensile test, TGA, and FTIR analysis. Further, different composite samples, namely, pure curaua, (curaua + MWCNTs) + resin and curaua+ (resin + MWCNTs), were manufactured via compression molding and tested to determine their mechanical and thermal properties. Scanning electron microscopy (SEM) analysis was used to examine the surfaces of the tested fibers. It was found that the addition of MWCNTs to the curaua fibers resulted in positive effects (an enhancement in properties was found for the MWCNT-modified fibers and their composites). The addition of MWCNTs also increased the thermal stability of the natural fibers and composites.
categoria
Materials Science
autores
Neto, JSS; Cavalcanti, DKK; Ferro, LE; de Queiroz, HFM; Aguiar, RAA; Banea, MD
nossos autores
Mariana Banea
Professor AuxiliarProjectos
CICECO - Aveiro Institute of Materials (UIDB/50011/2020)
CICECO - Aveiro Institute of Materials (UIDP/50011/2020)
Associated Laboratory CICECO-Aveiro Institute of Materials (LA/P/0006/2020)
agradecimentos
This work was partially supported by the Brazilian Research Agencies: National Council for Scientific and Technological Development (CNPq), grant number 311079/2020-2; Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior-Brasil (CAPES), finance Code 001; and Fundacao de Amparo a Pesquisa do Estado do Rio de Janeiro (FAPERJ), grant numbers E-26/211.072/2019 and E-26/202.728/2019. This work was developed within the scope of the CICECO project of the Aveiro Institute of Materials, UIDB/50011/2020, UIDP/50011/2020, and LA/P/0006/2020, financed by national funds through the FCT/MEC (PIDDAC).