Polyaniline Coated Curauá Fibres In
Polyamide-6 Composites:
The Effect Of Fibre Surface Modification
On The Crystallographic Properties
Author(s)
J. R. Araujo, C. B. Adamo, E. Robertis, A. Kuznetsov,
B. Archanjo, C. A. Achete & M.-A. De Paoli
Abstract
Composites have the ability to combine the individual properties of constitutive
components, generating a unique material with properties suitable for a particular
purpose. This study aims to develop a polymeric reinforced composite material,
which is antistatic and light. Polyaniline (PAni) is one of the most studied
conductive polymers due to its ability to exist in a large number of intrinsic
redox states. The possibility of carrying out PAni synthesis on vegetable fibres
and incorporating this in polymeric matrices, such as polyamide-6, enables the
production of antistatic reinforced materials. In this work, curauá fibres were
chemically treated with polyaniline doped with p-toluene sulfonic acid and
processed with polyamide-6 in a twin-screw co-rotating and interpenetrating
extruder. The microstructures of the neat curauá fibres and polyaniline coated
curauá fibres were characterized by X-ray diffraction (XRD) measurements.
Scanning electron microscopy was employed to observe the distribution and
morphology of the PAni nanoparticles. The oxidation states of PAni were
evaluated by X-ray photoelectron spectroscopy. X-ray diffraction combined with
microscopy analyses of PAni synthesized without a substrate, showed crystalline
components embedded into amorphous regions in the sample, while the PAni
synthesized on the fibres showed a lower degree of crystallinity. The XPS
Keywords
coating, short-fibre composites, surface treatments, photoelectron spectroscopy, extrusion, degree of crystallinity
Related Book
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