Article

Preparation of polyaniline–palladium composite microflakes by one-step interface polymerization method

Journal of Polymer Research (impact factor: 1.73). 04/2012; 16(4):421-426. DOI:10.1007/s10965-008-9244-9 pp.421-426

ABSTRACT Polyaniline–palladium (PANi-Pd) composite microflakes were synthesized through an immiscible organic/inorganic biphasic system
in the presence of poly(ethylene glycol) with molecular weight 4,000 (PEG4000). Aniline was oxidized by PdCl2 in the interface polymerization system, yielding PANi microflakes and elemental Pd nanoparticles simultaneously. Palladium
nanoparticles were uniformly dispersed in the microflakes of PANi. The results of FTIR spectra suggested that the oxidation
degree of PANi was affected by the initial ratio of metal ions to monomer. The PANi-Pd composites were characterized using
X-ray photoelectron spectroscopy and the conductivity of the composite was measured by conventional four-probe method. Scanning
and transmission electron microscopy were used to show the morphology of the composites.

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Keywords

Aniline
 
composite
 
composites
 
FTIR spectra
 
immiscible organic/inorganic biphasic system
 
initial ratio
 
interface polymerization system
 
metal ions
 
molecular weight 4,000
 
PANi
 
PANi microflakes
 
PANi-Pd
 
PANi-Pd composites
 
PdCl2
 
poly(ethylene glycol)
 
Polyaniline–palladium
 
transmission electron microscopy
 
X-ray photoelectron spectroscopy