Water-Dispersed Conductive Polypyrroles Doped with Lignosulfonate and the Weak Temperature Dependence of Electrical Conductivity
writer：Chao Yang, Peng Liu
keywords：Lignosulfonate ，Water-Dispersed Conductive Polypyrroles
source：期刊
specific source：Industrial & Engineering Chemistry Research
Issue time：2011年
The water-dispersed conductive polypyrroles (PPys) were prepared via the chemical oxidative
polymerization with lignosulfonate (LGS), an inexpensive byproduct from pulp processing industries, as
a dopant and template for tuning the properties of polypyrrole nanoparticles. The lignosulfonate doped
polypyrrole (PPy/LGS) nanoparticles were characterized with Fourier transform infrared (FTIR), UV vis,
thermogravimetric analysis (TGA), X-ray diffraction (XRD), transmission electron microscopy (TEM),
and electric conductivity. The diameters of the PPy/LGS nanoparticles decreased from 100 to 20 nm
with the increasing LGS. Their electrical conductivities were affected markedly by the dopant amount
added. The PPy/LGS have weakly temperature-dependent conductivity over the entire temperature interval
from 283 to 423 K.