Premium
Polymerization of Aniline Using Iron(III) Catalyst and Ozone, and Kinetics of Oxidation Reactions in the Catalytic System
Author(s) -
Yan Hu,
Kajita Masashi,
Toshima Naoki
Publication year - 2002
Publication title -
macromolecular materials and engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.913
H-Index - 96
eISSN - 1439-2054
pISSN - 1438-7492
DOI - 10.1002/1439-2054(20020801)287:8<503::aid-mame503>3.0.co;2-n
Subject(s) - polyaniline , aniline , polymerization , materials science , catalysis , polymer chemistry , kinetics , polyaniline nanofibers , chemistry , organic chemistry , polymer , composite material , physics , quantum mechanics
The environmentally benign polymerization of aniline provided polyaniline with an emeraldine structure by using iron(III) and ozone which is easily converted from oxygen in air. The influence of the reaction temperature upon the molecular weight of the polyaniline in this system is different from that in the polymerization of aniline using ammonium peroxodisulfate as an oxidant. Although the polyaniline prepared here has low molecular weight, the low molecular weight of the polyaniline does not significantly influence the electrical conductivity of cast films. In contrast, this can provide an advantage for the engineering of polyaniline through solution‐processing. Kinetics of oxidation reactions in the polymerization, systematically investigated here, has revealed that polyaniline is produced catalytically in terms of iron(III) and that an oxidation reaction of iron(II) to iron(III) could be a rate‐determining step in the polymerization.