CJCU

Chem. J. Chinese Universities ›› 2002, Vol. 23 ›› Issue (10): 2014.

• Articles • Previous Articles    

Studies on Monodisperse Core/Shell Conductive Polymer Composite Materials(Ⅰ)——Characterization of Monodisperse Core/Shell Polystyrene/Polypyrrole Structure

YANG Zheng-Long1, HOU Wen-Bo1, LIU Zheng-Ping1, HUANG Li-Yan1, PENG Xiao-Gang2   

  1. 1. Department of Chemistry, Beijing Normal University, Beijing 100875, China;
    2. Department of Chemistry and Biochemistry, University of Arkansas, Fayetteville AR 72701, USA
  • Received:2001-08-13 Online:2002-10-24 Published:2002-10-24

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Abstract: Monodisperse core/shell latex particles composed of a polystyrene(PS) core and a thin conductive polypyrrole (PPy) shell were synthesized by means of two-stage emulsion polymerization. Proofs for the success of core/shell synthesis were obtained by using transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy(XPS). Pressed pellet conductivity measurements on the dried composites indicated a low percolation threshold of 13.8%. The conductivity for the composites was higher than that of a heterogeneous admixture of dried PS latex and PPy bulk powder. The highest conductivity of the core/shell composite was 0.14 S/cm.

Key words: Monodisperse system, Polystyrene/polypyrrole core/shell latex, Conductive polymer composite materials

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