title: Composite polyamide 6/polypyrrole conductive nanofibers.
abstract: Conductive Polyamide 6 (PA-6) nanofibers were prepared by making a conductive polypyrrole coating obtained by a polymerization of pyrrole molecules directly on the fiber surface. A solution of PA-6 added with ferric chloride in formic acid has been electrospun and the fibers obtained showed an average diameter of 260 nm with a smooth surface. The fibers have been then exposed to pyrrole vapours and a compact coating of polypyrrole was formed on the fiber surface. The growth of the coating was monitored by measuring the increment of the fiber diameter and by FT-IR spectroscopy. The same technique was used to study the interaction between the ferric chloride and the polyamide chains. The polypyrrole coating on the fibers turned out to be conductive with a pure resistive characteristic and the stability of the conductivity was evaluated in air at room temperature.
authors.affiliation: Dipartimento di Chimica, Materiali ed Ingegneria Chimica, Politecnico di Milano, p.zza L. da Vinci 32, 20133 Milano, Italy.
authors.forename: Flavio
authors.initials: F
authors.lastname: Granato
authors.forename: Andrea
authors.initials: A
authors.lastname: Bianco
authors.forename: Chiara
authors.initials: C
authors.lastname: Bertarelli
authors.forename: Giuseppe
authors.initials: G
authors.lastname: Zerbi