Abstract
Deposition of polypyrrole-platinum (PPy-Pt) nanocomposite from aqueous solution onto micrometer-sized polystyrene (PS) particles was conducted. The PS seed particles and resulting composite particles were extensively characterized with respect to particle size and size distribution, morphology, surface/bulk chemical compositions, and conductivity. PPy-Pt nanocomposite loading onto the PS seed latex particles was systematically controlled over a wide range (5.7–36.6 wt%) by changing the weight ratio of the PS latex and PPy-Pt nanocomposite. Pt loading was also controlled between 2.94 and 18.8 wt%. The conductivity of pressed pellets increased with the PPy-Pt nanocomposite loading, and conductivities were ranged from 4.62 × 10−8 to 9.56 × 10−11 S cm−1. Hollow capsule and broken egg-shell morphologies were observed by scanning/transmission electron microscopy after extraction of the PS component from the composite particles, which confirmed a PS core and PPy-Pt nanocomposite shell morphology. Transmission electron microscopy confirmed that nanometer-sized Pt particles were distributed in the shell.
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Acknowledgments
A Rabbit Science Co., Ltd, is thanked for elemental microanalysis studies. Prof. K. Akamatsu and Dr. T. Tsuruoka are thanked for TEM studies. This work was supported by a Grant-in-Aid for Scientific Research on Innovative Areas “New Polymeric Materials Based on Element-Blocks,” “Engineering Neo-Biomimetics,” and “Molecular Soft-Interface Science” from the Ministry of Education, Culture, Sports, Science and Technology of Japan.
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Takeoka, H., Hamasaki, H., Harada, Y. et al. Synthesis and characterization of polypyrrole-platinum nanocomposite-coated latex particles. Colloid Polym Sci 293, 1483–1493 (2015). https://doi.org/10.1007/s00396-015-3534-7
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DOI: https://doi.org/10.1007/s00396-015-3534-7