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Natural Brazilian Amazonic (Curauá) Fibers Modified with Polyaniline Nanoparticles
Author(s) -
Souza Fernando G.,
Oliveira Geiza E.,
Rodrigues Cezar H. M.,
Soares Bluma G.,
Nele Márcio,
Pinto José Carlos
Publication year - 2009
Publication title -
macromolecular materials and engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.913
H-Index - 96
eISSN - 1439-2054
pISSN - 1438-7492
DOI - 10.1002/mame.200900033
Subject(s) - polyaniline , materials science , x ray photoelectron spectroscopy , nanoparticle , electrical resistivity and conductivity , composite material , polyaniline nanofibers , small angle x ray scattering , surface modification , chemical engineering , nanotechnology , polymer , scattering , physics , electrical engineering , optics , engineering , polymerization
Abstract The surface of natural Brazilian amazonic fibers (curauá, Ananas erectifolius ) was modified with polyaniline nanoparticles, through in situ preparation of polyaniline nanoparticles in presence of the curauá fibers. This allowed for a significant increase in the electrical conductivity of the fibers (≈2 500 times). As the electrical resistivity of the modified fibers is a function of the applied external pressure, the produced composites can be used as a cheap pressure‐sensing material. The modified materials were also characterized by FT‐IR, XPS and SAXS, and the obtained results were used to explain some of the observed characteristics of the materials.