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Polyaniline/Ag nanocomposite synthesized by using aniline as dispersant and stabilizer of nanosilver sol
Author(s) -
Li Zhihua,
Li Yanbo,
Lu Jianti,
Zheng Feng,
Laven Jozua,
Foyet Adolphe
Publication year - 2012
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.38618
Subject(s) - polyaniline , nanocomposite , materials science , dispersant , composite number , aniline , chemical engineering , electrochemistry , anode , conductive polymer , polymerization , polymer chemistry , composite material , polymer , electrode , dispersion (optics) , chemistry , organic chemistry , physics , optics , engineering
Polyaniline/silver (PANI/Ag) nanocomposite was successfully prepared by in‐situ polymerization from nanosilver sol using aniline (An) as both dispersant and stabilizer and characterized by FT‐IR, XRD SEM, TEM and electrochemical methods, respectively. The results showed that core‐shelled composite particles of less than 100 nm were synthesized with PANI as shell formed around a core of silver nanoparticles at higher aniline levels. Compared to pure PANI, PANI/Ag nanocomposites have higher electrical conductivity (65.98 S/cm) and current response and capacitance as well. Potentio dynamic polarization showed the anodic shifting of zero current potential and a lower exchange current density for the PANI/Ag composite. Compared with PANI, the PANI/Ag nanocomposite is a promising candidate for coatings with improved anti‐corrosion performance. © 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013