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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-22 1:34 |
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Conference: Bucharest University Faculty of Physics 2005 Meeting
Section: Polymer Physics
Title:
Conducting PAni micro-wires in PAN matrix
Authors:
S. Vulpe, F. Nastase, Claudia Nastase, Livia Maria Constantinescu, I. Stamatin
Affiliation:
University of Bucharest, Polymer Science Department,
P.O. Box MG-11, 077125 Magurele – Bucharest, Romania
E-mail
vulpes@polymer.fizica.unibuc.ro
Keywords:
anisotropy, conductivity, dielectric properties, percolation
Abstract:
In many practical aspects need, ready for use thin foils and bundle micro and nano-fibriles in ropes where the properties should be combined with high mechanical strength and thermal stability. In this respect, we report a method to obtain conducting PAni micro-wires in PAN matrix using deposition in thermo-centrifugal field. The films have a very good anisotropy in electrical conduction over percolation threshold determined by chain orientation. FT-IR, AFM and optical microscopy used for characterizations show a high degree of orientation of the macromolecular chains and follow same anisotropy as in electrical conductivity. The films have strong attenuation in large frequency range from KHz to MHz.
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