Advanced Chemical Methods for Soil and Clay Minerals Research

doi:10.1007/978-94-009-9094-4

Cited by 15 publications

References 26 publications

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An EPR investigation of conductive polyaniline–poly(methyl methacrylate‐co‐acrylic acid) blends

Lai

Shih

et al. 2008

Polymer Composites

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A conductive blend of polyaniline (PANI) with sodium form poly(methyl methacrylate‐co‐acrylic acid) copolymer (PMMAA) was prepared by in situ dispersion polymerization. The PANI‐PMMAA blends were characterized with UV–vis, FTIR, and electron paramagnetic resonance (EPR) spectra. The effects of PANI and temperature on the electronic properties of the PANI‐PMMAA blends were studied with EPR technique. The PANI and temperature affect the intermolecular interaction between PANI and PMMAA and then determines the EPR parameters (A/B ratio, g factor, T2, ΔHpp, Ns, and lineshape). POLYM. COMPOS., 2008. © 2008 Society of Plastics Engineers

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An EPR investigation of conductive polyaniline–poly(methyl methacrylate‐co‐acrylic acid) blends

Lai

Shih

et al. 2008

Polymer Composites

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Synthesis and characterization of conductive polypyrrole with improved conductivity and processability

Chang

Lin

2009

Polymer International

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BACKGROUND: The solubility and conductivity of chemically synthesized polypyrrole (PPy) are dependent on the synthesis procedure and composition. Enhanced processability of PPy with high conductivity can be achieved using the anionic polyelectrolyte poly(styrene sulfonate) (PSS). RESULTS: High-conductivity PPy with better processability was successfully synthesized by in situ chemical oxidation polymerization using various concentrations of PSS. Elemental analysis results show that the C/S and N/S molar ratios of the PPy fabricated in the presence of PSS are in good agreement with theoretical values for PPy-SO(4). The S/N ratio increases with increasing PSS content, indicating the high doping level for PPy as the PSS content increases. Scanning electron microscopy and high-resolution transmission electron microscopy images show that the fabricated PPy has spherical structures with the average particle size for the pure PPy being about 250 nm and markedly decreasing to 20-40 nm with the addition of PSS. CONCLUSION: The conductivities of PPy synthesized with a PSS/pyrrole monomer weight ratio of 0.25 are about five times higher than that of PPy matrix. These results are perhaps due to the part played by PSS serving as a dopant to be incorporated into the PPy structure to improve the conductivity of the fabricated PPy. (c) 2009 Society of Chemical Industr

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Polyaniline intercalated into zeolites, zirconium phosphate and zirconium arsenate

Chang¹,

Chao

1994

J of Physical Organic Chem

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Aniline (or aniline hydrochloride) was intercalated into zeolite, zirconium phosphate and zirconium arsenate (proton form and sodium form) and subsequently oxidized to polyaniline (PAN) by ammonium peroxodisulphate. The structure of PAN in the host was studied by electron paramagnetic resonance spectroscopy. PAN in the host gave a free‐radical EPR signal at 2·0035‐2·0037 for the hydrogen or 2·0047‐2·0049 for the sodium form of the host, similarly to the ermeraldine salt (PAN–2S) or emeraldine base (PAN–2A) form of PAN. Saturation occurs in PAN–HZ and PAN–HS. In contrast, the intrachannel PAN in HY was unsaturated under the same conditions. Conduction in PAN–HZ and PAN–HS was predominately carried out by variable‐range hopping and tunnelling respectively, and PAN–HY showed insulating properties.

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Advanced Chemical Methods for Soil and Clay Minerals Research

Cited by 15 publications

References 26 publications

An EPR investigation of conductive polyaniline–poly(methyl methacrylate‐co‐acrylic acid) blends

An EPR investigation of conductive polyaniline–poly(methyl methacrylate‐co‐acrylic acid) blends

Synthesis and characterization of conductive polypyrrole with improved conductivity and processability

Polyaniline intercalated into zeolites, zirconium phosphate and zirconium arsenate

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