Abstract
Aqueous chemical oxidative dispersion polymerizations of pyrrole using PdCl2 oxidant were conducted using water-soluble polymeric colloidal stabilizers in order to synthesize polypyrrole–palladium (PPy–Pd) nanocomposite particles in one step. PPy–Pd nanocomposite particles with number average diameters of approximately 30 nm were successfully obtained as colloidally stable aqueous dispersions, which were stable at least for 7 months, using poly(4-lithium styrene sulfonic acid) colloidal stabilizer. The resulting nanocomposite particles were extensively characterized with respect to particle size, size distribution, colloidal stability, nanomorphology, surface/bulk chemical compositions, and conductivity. X-ray photoelectron spectroscopy indicated the existence of poly(styrene sulfonic acid) colloidal stabilizer on the surface of the nanocomposite particles. Transmission electron microscopy studies confirmed that nanometer-sized Pd nanoparticles were distributed in the PPy matrix.
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Acknowledgments
This work was partially supported by a Grant-in-Aid for Scientific Research on Innovative Areas “Molecular Soft-Interface Science” from the Ministry of Education, Culture, Sports, Science, and Technology of Japan. Prof. K. Akamatsu, Dr. T. Tsuruoka, and Prof. H. Nawafune of Konan University are thanked for the TEM studies.
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Hamasaki, H., Fukui, N., Fujii, S. et al. Sterically stabilized polypyrrole–palladium nanocomposite particles synthesized by aqueous chemical oxidative dispersion polymerization. Colloid Polym Sci 291, 223–230 (2013). https://doi.org/10.1007/s00396-012-2646-6
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DOI: https://doi.org/10.1007/s00396-012-2646-6