Thermal and morphological characterization of conducting, polyaniline/polystyrene blends

[Display omitted] ► In this study was prepared the conductive blends polyaniline/polystyrene (PAni/PS) by casting method resulting in flexible films. ► The resulting film easily removable from the substrate is thin with a glossy aspect. ► Meanwhile the PS films presented as a fragile material, the b...

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Bibliographic Details
Published in:Synthetic metals 2012-05, Vol.162 (7-8), p.705-709
Main Authors: da Silva Guimarães, Iran, Hidalgo, Angel Alberto, da Cunha, Helder Nunes, de Miranda Santos, Leandro, dos Santos, José Aroldo Viana, dos Santos Júnior, José Ribeiro
Format: Article
Language:English
Subjects:
Applied sciences
Blends
Electrical, magnetic and optical properties
Exact sciences and technology
Organic polymers
Physicochemistry of polymers
Polyaniline
Polystyrene
Properties and characterization
Thermal stability
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Summary:[Display omitted] ► In this study was prepared the conductive blends polyaniline/polystyrene (PAni/PS) by casting method resulting in flexible films. ► The resulting film easily removable from the substrate is thin with a glossy aspect. ► Meanwhile the PS films presented as a fragile material, the blends are similar to conducting polymer. ► The thermogravimetric measurements (TGA) show that the blends have higher thermal stability. In this study the conductive blend polyaniline/polystyrene (PAni/PS) was prepared by casting method resulting in flexible films, it was doped with hydrochloric acid. We conducted a series of characterizations such as infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), scanning electron microscopy (SEM) and impedance spectroscopy (AC). The infrared (FTIR) analysis was intended to identify the main stretching vibrations of organic groups for both the components. The thermogravimetric measurements (TGA) show that the blends have higher thermal stability than the polymers alone, since the mass losses were less pronounced. The PS presented itself as a fragile material; the blends are similar to conducting polymer. On the other hand, the electronic microscopy scans showed that the PAni film has tiny clusters, which indicates that the thermoplastic interacts with PAni, resulting in a conductive blend with low bias current.
ISSN:0379-6779
1879-3290
DOI:10.1016/j.synthmet.2012.02.015