Water Dispersibility and Temperature Dependence of Electrical Conductivity ofConductive Polypyrrole Nanoparticles Doped with Fulvic Acids
作者：Chao Yang, Peng Liu.
关键字：fulvic acids， Nanoparticles
论文来源：期刊
具体来源：Journal of chemical & engineering data
发表时间：2011年
The water-dispersed conductive polypyrrole (PPy) nanoparticles were prepared via the chemical oxidative
polymerization with fulvic acids (FAs), a renewable resource from both soils and municipal waste compost,
as dopant and stabilizer for tuning the properties of polypyrrole nanoparticles. The FA-doped polypyrrole
(PPy/FAs) nanoparticles were characterized with Fourier transform infrared (FTIR), UV vis, thermogravi-
metric analysis (TGA), transmission electron microscopy (TEM), and electric conductivity. The diameters
of the PPy/FAs nanoparticles decreased from (150 to 20) nm with the increasing of the feeding ratio of
FAs, and the PPy/FAs nanoparticles could be well-dispersed in water. Their electrical conductivities were
affected markedly by the amount of the natural dopant added. They have weakly temperature-dependent
conductivity over the entire temperature interval from (283 to 423) K.