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Type: Artigo de periódico
Title: Elastomer Composite Based on EPDM Reinforced with Polyaniline Coated Curaua Fibers Prepared by Mechanical Mixing
Author: Araujo, JR
Adamo, CB
Rocha, WFC
Silva, MVCE
Carozo, V
Calil, VL
De Paoli, MA
Abstract: Curaua fibers were used to reinforce elastomeric matrices with polyaniline (PAni) synthesized directly on the fiber surfaces to produce antistatic-reinforced composites. In this work, composites of poly(ethylene-co-propylene-co-diene) with curaua fibers coated with PAni were prepared by mechanical mixing in a counter-rotating twin rotor internal mixer. Then, mechanical and electrical properties of these composites were correlated to Raman and Fourier transformed infrared spectra (FTIR) using chemometric data analyze, such as principal component analysis (PCA) and hierarchical cluster analysis (HCA). Raman spectra showed correlation with electrical properties of conductive composites while FTIR spectra showed good correlation with mechanical properties. EPDM reinforced with PAni coated curaua fibers presented higher tensile strength and modulus than EPDM reinforced with pristine curaua fibers, indicating that the reinforcement effect was obtained. Chemical interaction between the phases occurs with formation of hydrogen bonding between the aminic nitrogens of PAni and the carbonyl groups of lignin of the fibers. (c) 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014, 131, 40056.
Subject: composites
conducting polymers
Country: EUA
Editor: Wiley-blackwell
Rights: fechado
Identifier DOI: 10.1002/app.40056
Date Issue: 2014
Appears in Collections:Unicamp - Artigos e Outros Documentos

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