Premium
Synthesis and characterization of ferromagnetic polyaniline with conductivity in an applied magnetic field
Author(s) -
Zhang Ya,
Zhu Chunxia,
Kan Jinqing
Publication year - 2008
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.28414
Subject(s) - polyaniline , materials science , magnetization , ferromagnetism , unpaired electron , electron paramagnetic resonance , coercivity , conductivity , paramagnetism , analytical chemistry (journal) , magnetic field , nuclear magnetic resonance , condensed matter physics , chemistry , organic chemistry , composite material , polymer , physics , quantum mechanics , polymerization
Ferromagnetic polyaniline (PANI) with conductivity was synthesized with peroxydisulfate as an oxidant and horseradish peroxidase as a catalyst in an N ′‐ a ‐hydroxythylpiperazine‐ N ′‐ethanesulfanic acid buffer solution containing aniline, HCl, and NiCl 2 ·6H 2 O in an applied magnetic field. The result of an electron paramagnetic resonance spectrum indicated that there were unpaired electrons in the resulting product, the spin density of which was 7.60 × 10 19 spins/g. The curve of the magnetization versus the magnetic field showed that PANI had soft ferromagnetic behavior at about 300 K. The saturation magnetization and coercive force of PANI were 0.033 emu/g and 5 Oe, respectively. Ultraviolet–visible and Fourier transform infrared spectra indicated that there was interaction between Ni 2+ and PANI chains but the structure of the backbone chains of PANI synthesized in the presence of a magnetic field hardly changed compared with that of PANI synthesized without NiCl 2 ·6H 2 O. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci, 2008