Polymerization of halogenated anilines by plasma

Abstract

This work presents an experimental study about the electric conductivity in polyanilines synthesized by plasma obtained from halogenated anilines in which chlorine or iodine atoms are bonded in meta position to the aniline rings. The objective is to study the enhancement of the electric conductivity of these structures due to the addition of electronegative atoms to the polymeric chains. The results show that the halogenated anilines produce polymers with an electric conductivity up to eight orders of magnitude higher than those of the undoped polyanilines, reaching $10 À4 S/cm.

Hydrophilicity of electrospun microfibers of polyethylene oxide with semisoluble polyaniline for biological applications

“…Diameters and dispersions (FWHM/2) of the fibers were smaller in PANI due to the combination of experimental conditions applied to the electrospinning, as the use of a static collector and 20 kV instead 12.2 kV applied to the other fibers. Norris et al (2000) reported diameters of 1.6 μm for PEO fibers and 1.9 μm for PANI/PEO hybrid fibers 12 . In this work, the mean diameters of PEO and PANI/PEO fibers were similar because of the electrospinning conditions were also similar.…”

“…6 μm for PEO fibers and 1.9 μm for PANI/PEO hybrid fibers. 12 In this work, the mean diameters of PEO and PANI/PEO fibers were similar because of the electrospinning conditions were also similar. Aligned fibers can provide guidance in muscle growth and in the liberation of drugs.…”

“…However, when PANI is synthesized by plasma polymerization, the collisions among particles in the plasma promote crosslinking that usually result in insoluble polymers 9–11 . These polymers cannot be processed by electrospinning to form fibers, because this technique works only with soluble polymers 12,13 . PANI has electrical semiconductor properties and it has been combined in fibers with PEO, polyvinylidene diflouride, polyamide 6, and zinc oxide mainly with the purpose to increase the conductivity 14–17 .…”

“…[9][10][11] These polymers cannot be processed by electrospinning to form fibers, because this technique works only with soluble polymers. 12,13 PANI has electrical semiconductor properties and it has been combined in fibers with PEO, polyvinylidene diflouride, polyamide 6, and zinc oxide mainly with the purpose to increase the conductivity. [14][15][16][17] In this area, fibers of PANI blended with PEO doped with camphor sulfonic acid were prepared by electrospinning with diameter between 0.95 and 2.1 μm with electrical conductivity of 0.1 S/cm.…”

Effect of Fluorine Substitution of Aniline Ring on Pulsed Plasma Polymer Growth and Structure

“…In this study, the chemical structure of the then‐obtained polyfluoroaniline (PFANi) and its growth kinetics are examined and compared with plasma‐PANi in order to study the influence of fluorine substitution. In the literature,9 it has been found that the plasma polymerization in CW mode of aniline substituted in meta position with Cl or I atoms leads to the increase of the polymer conductivity and crystallinity.…”