Your browser doesn't support javascript.
loading
Characterization of Polyester Nanocomposites Reinforced with Conifer Fiber Cellulose Nanocrystals.
Maradini, Grazielle da Silva; Oliveira, Michel Picanço; Guanaes, Gabriel Madeira da Silva; Passamani, Gabriel Zuqui; Carreira, Lilian Gasparelli; Boschetti, Walter Torezani Neto; Monteiro, Sergio Neves; Pereira, Artur Camposo; de Oliveira, Bárbara Ferreira.
Afiliação
  • Maradini GDS; Forest and Wood Sciences Department, Federal University of Espírito Santo, Jeronimo Monteiro 29550-000, Brazil.
  • Oliveira MP; Forest and Wood Sciences Department, Federal University of Espírito Santo, Jeronimo Monteiro 29550-000, Brazil.
  • Guanaes GMDS; Forest and Wood Sciences Department, Federal University of Espírito Santo, Jeronimo Monteiro 29550-000, Brazil.
  • Passamani GZ; Forest and Wood Sciences Department, Federal University of Espírito Santo, Jeronimo Monteiro 29550-000, Brazil.
  • Carreira LG; Forest and Wood Sciences Department, Federal University of Espírito Santo, Jeronimo Monteiro 29550-000, Brazil.
  • Boschetti WTN; Forestry Engineering Department, Federal University of Viçosa, Viçosa 36570-900, Brazil.
  • Monteiro SN; Military Institute of Engineering-IME, Materials Science Program, Praça General Tibúrcio 80, Urca, Rio de Janeiro 22290-270, Brazil.
  • Pereira AC; Military Institute of Engineering-IME, Materials Science Program, Praça General Tibúrcio 80, Urca, Rio de Janeiro 22290-270, Brazil.
  • de Oliveira BF; Advanced Materials Department, Northern Fluminense State University, Av Alberto Lamego, 2000, Campos dos Goytacazes 28013-602, Brazil.
Polymers (Basel) ; 12(12)2020 Nov 28.
Article em En | MEDLINE | ID: mdl-33260682
The application of cellulose nanocrystal has lately been investigated as polymer composites reinforcement owing to favorable characteristics of biodegradability and cost effectiveness as well as superior mechanical properties. In the present work novel nanocomposites of unsaturated polyester matrix reinforced with low amount of 1, 2, and 3 wt% of cellulose nanocrystals obtained from conifer fiber (CNC) were characterized. The polyester matrix and nanocomposites were investigated by scanning electron microscopy (SEM), X-ray diffraction (XRD), bending test, and thermogravimetric analysis (TGA). The result showed that the addition of only 2 wt% CNC increased the nanocomposite flexural strength by 159%, the ductility by 500% and the toughness by 1420%. Fracture analyses by SEM revealed a uniform participation of the CNC in the polyester microstructure. The resistance to thermal degradation of the CNC reinforced nanocomposites was improved in more than 20 °C as compared to neat polyester. No significant changes were detected in the water absorptions and XRD pattern of the neat polyester with incorporations up to 3 wt% CNC. These results reveal that the 2 wt% CNC nanocomposite might be a promising more ductile, lightweight and cost-effective substitute for conventional glass fiber composites in engineering applications.
Palavras-chave
Texto completo
Adicionar na Minha BVS
Imprimir
XML
PubMed Links
Buscar no Google

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Polymers (Basel) Ano de publicação: 2020 Tipo de documento: Article País de afiliação: Brasil País de publicação: Suíça
Texto completo
Adicionar na Minha BVS
Imprimir
XML
PubMed Links
Buscar no Google

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Polymers (Basel) Ano de publicação: 2020 Tipo de documento: Article País de afiliação: Brasil País de publicação: Suíça