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Synthesis and properties of polyaniline nanolayers in the presence of retinol in aqueous ethanol
Author(s) -
Wang Donghong,
Qi Shuhua,
Wu Youming,
An Qunli,
Li Chunhua
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.28868
Subject(s) - polyaniline , aqueous solution , materials science , conductivity , scanning electron microscope , fourier transform infrared spectroscopy , cyclic voltammetry , polymerization , attenuated total reflection , analytical chemistry (journal) , chemical engineering , spectroscopy , nuclear chemistry , ethanol , electrochemistry , chemistry , organic chemistry , composite material , electrode , polymer , physics , quantum mechanics , engineering
Polyaniline (PANI) nanolayers were shown to form spontaneously during the chemical oxidation in the presence of retinol using pure water and aqueous ethanol as reaction media. The effects of the retinol, the volume fraction of ethanol, and the acidity of the polymerization medium on the D.C. conductivity of PANI were investigated through two‐probe method at room temperature. The introduction of 0.2 g retinol improved the D.C. conductivity value of PANI to 3.0 S/cm in pure water and 4.46 S/cm in 50% aqueous ethanol when the H + concentration was 0.5 M . The D.C. conductivity values were 5.1 and 5.49 S/cm when the concentration of H + was 1.0 M in pure water and 2.5 M in 50% aqueous ethanol, respectively. The products were also characterized by Fourier transform infrared spectroscopy, ultraviolet–visible spectroscopy, scanning electron microscope, cyclic voltammetry, and X‐ray diffraction techniques. Moreover, the resulting PANI nanolayers exhibited an unusual electromagnetic loss at the microwave frequency ( f = 8.2–12.4 GHz) and it arose from order arrangement of polaron as charge carrier caused by nanolayers morphologies and the materials can be used for the potential application as microwave absorbing materials. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci, 2008