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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Conductive composites of polyamide-6 with polyaniline coated vegetal fiber

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Autor(es):
Araujo, J. R. [1] ; Adamo, C. B. [1] ; De Paoli, Marco-A. [1]
Número total de Autores: 3
Afiliação do(s) autor(es):
[1] Univ Estadual Campinas, Inst Quim, BR-13084970 Campinas, SP - Brazil
Número total de Afiliações: 1
Tipo de documento: Artigo Científico
Fonte: CHEMICAL ENGINEERING JOURNAL; v. 174, n. 1, p. 425-431, OCT 15 2011.
Citações Web of Science: 28
Resumo

Vegetal fibers, like curaua fibers, are used as reinforcement for thermoplastics in biocomposites, due to their low density and availability. Polyaniline can be deposited on the surface of fibers producing electrically conductive fibers. The conductivity of these PAni treated fibers suggest their use as antistatic agents. Composites of polyamide-6 with Pani-treated curaua fibers were prepared in a twin-screw extruder and specimens were obtained by transfer-molding. The electrical properties of the modified fibers and composites were measured and the mechanical properties were evaluated by tensile tests. The morphology of the composites, the fibrillation process and adhesion at the polymer/fiber interface were observed by scanning electron micrography. The ATR-FTIR showed that the most important bands of PAni were present in the modified fibers. The thermogravimetric results showed that the PAni-coated fibers present two distinct weight loss processes with a positive shift of the PAni degradation process, corresponding to a stabilization effect. The composite has a conductivity of 5 x 10(-7) S cm(-1), three orders of magnitude higher than pure polyamide-6, and in the range of antistatic materials. The composites with PAni-coated fibers show better mechanical performance than the polymer matrix, and SEM shows good adhesion at the polymer/fiber interface. (C) 2011 Elsevier B.V. All rights reserved. (AU)

Processo FAPESP: 10/17871-6 - Preparação de um material elastomérico condutor a partir de compósitos de EPDM e fibras de Curauá recobertas com polianilina
Beneficiário:Cristina Battesini Adamo
Linha de fomento: Bolsas no Brasil - Iniciação Científica
Processo FAPESP: 10/17804-7 - Compósitos poliméricos
Beneficiário:Maria Isabel Felisberti
Linha de fomento: Auxílio à Pesquisa - Temático