Analysis of Conducting Poly(o-methoxyaniline) Blends by Impedance Spectroscopy

• Published in: Macromolecular symposia. Vol. 245-246; no. 1; pp. 132 - 139
• Main Authors: Machado, Wagner S., Moreira, José C., Onmori, Roberto K., Wang, Shu H., Soares, Demétrio A. W.
• Format: Journal Article
• Language: English
• Published: Weinheim WILEY-VCH Verlag 01.12.2006; WILEY‐VCH Verlag
• Subjects: Blends; conducting blends; Conduction; Crystal structure; impedance spectroscopy; Measuring instruments; Morphology; Platforms; poly(o-methoxyaniline); Polymer blends; Sulfonic acid
• ISSN: 1022-1360; 1521-3900
• DOI: 10.1002/masy.200651318

Impedance measurements were carried out in flexible, conducting and semi crystalline films obtained by casting poly(p‐hydroxystyrene)‐b‐polyisoprene (PHS‐b‐IR) and p‐toluene sulfonic acid (TSA)‐doped poly(o‐methoxyaniline) (POMTS) mixtures from N,N‐dimethylformamide solutions. The measures ac were made in LCR Meter HP4284A equipment, in the range 102–106 Hz. The results were analyzed using a program in LabView platform for the attainment of the impedance arcs to obtain the conducting blends parameters. The obtained results had allowed evaluating some characteristics of studied conducting POMTS blends as conductivity ac, dielectric relaxation time, and capacitance. Analysis by optical microscopy (OM) allowed the observation of quasi‐spherical particles dispersed morphology for blends with 5 to 50‐wt% of POMTS. However, this morphology was not observed for blends presenting more than 50% of POMTS.