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Elastomer composite based on EPDM reinforced with polyaniline coated curauá fibers prepared by mechanical mixing
Author(s) -
Araujo Joyce R.,
Adamo Cristina B.,
Rocha Werickson F. C.,
Costa e Silva Marcos V.,
Carozo Vitor,
Calil Vanessa L.,
De Paoli MarcoA.
Publication year - 2014
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.40056
Subject(s) - materials science , composite material , polyaniline , fourier transform infrared spectroscopy , elastomer , epdm rubber , composite number , raman spectroscopy , ultimate tensile strength , dynamic mechanical analysis , thermoplastic elastomer , antistatic agent , natural rubber , polymer , chemical engineering , copolymer , polymerization , physics , optics , layer (electronics) , engineering
Curauá 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 curauá 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 curauá fibers presented higher tensile strength and modulus than EPDM reinforced with pristine curauá 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. © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014 , 131 , 40056.