Article
Synthesis and properties on polyaniline in the presence of nickel chloride

- May 2009
- eXPRESS Polymer Letters 3(6):333-339

- DOI:
- 10.3144/expresspolymlett.2009.42

- Y. Tan

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Article Synthesis and properties on polyaniline in the presence of nickel chloride
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One-Step Synthesis of Superparamagnetic Fe3O4@PANI Nanocomposites
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Abstract
Both Conducting and Ferromagnetic polyaniline containing nickel (abbreviated as PANI-Ni) is synthesized in a solution containing aniline, HCl and NiCl2, using peroxydisulphate as an oxidant and horseradish peroxidase as a catalyst. The conductivity of PANI-Ni is about 10-1 Sc m -1. The result of electron paramagnetic resonance (EPR) spectra indicated that there were unpaired electrons in PANI-Ni, and the spin density of the PANI-Ni was 1.09·1019 spins g-1. The plot of magnetization (M) against the magnetic field (H) indicated that the PANI-Ni was soft ferromagnetic at about 300 K, the sat- uration magnetization (Ms) and the coercive force (Hc) of which were 4.5 emu g -1 (electromagnetic unit per gram) and about 55 Oe, respectively. UV-Visible (UV-vis) and Fourier Transform Infrared (FTIR) spectra showed that there was strong interaction between Ni2+ and PANI chains, but the backbone chains of PANI-Ni were hardly changed compared with PANI. Cyclic voltammogram results indicated that the PANI-Ni film was of excellent electrochemical activity.
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