Chem. J. Chinese Universities ›› 2009, Vol. 30 ›› Issue (10): 2090.

• Articles • Previous Articles     Next Articles

Preparation and Electrical Property of Monodisperse P(St-BA-AN)/PANI Core/Shell Composite Particles

YAN Jian-Hong1, HUANG Li-Yan1*, LIU Zheng-Ping2*, ZHANG Jun-Gang1, HOU Wen-Bo1   

  1. 1. College of Chemistry,
    2. Key Lab of Environmentally Friendly and Functional Polymer Materials, Beijing Normal University, Beijing 100875, China
  • Received:2009-01-12 Online:2009-10-10 Published:2009-10-10
  • Contact: HUANG Li-Yan. E-mail: hly@bnu.edu.cn; LIU Zheng-Ping. E-mail: lzp@bnu.edu.cn
  • Supported by:

    国家自然科学基金(批准号: 50373004)和北京市教育委员会共建项目基金资助.

Abstract:

Monodisperse poly(styrene-butyl acrylate-acrylonitrile)[P(St-BA-AN)] latex particles were successfully coated with polyaniline(PANI) by seed emulsion polymerization method. Conductivity of P(St-BA-AN)/PANI composite microspheres can be controlled by changes of the components of seed latex, the amount of oxidant, aniline and other conditions. Proofs for the synthesis of core/shell composite particles were obtained via scanning electron microscopy(SEM), transmission electron microscopy(TEM), Fourier transform infrared(FTIR) spectroscopy and diffuse reflectance spectroscopy. It was found that the electrical conductivity of core/shell composites significantly increased by introducing of acrylonitrile into the copolymer latex particle. The conductivity for the P(St-BA-AN)/PANI(40%) core/shell composites was 0.71 S/cm by four-probe method. FTIR and IR diffuse reflection analysis confirmed that there is certain interaction between nitrile-group in P(St-BA-AN) and imine-group in PANI for the core/shell composites. The existence of the interaction of composite structure is an intrinsic factor that results in the increase of electrical conductivity. The mechanism of the interaction was proposed.

Key words: P(St-BA-AN)/PANI; Core/shell structure; Composite particle; Conductive polymer

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