Acta Phys. -Chim. Sin. ›› 2004, Vol. 20 ›› Issue (01): 103-106.doi: 10.3866/PKU.WHXB20040122

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Preparation by Dispersion Polymerization and Characterization of Soluble and Stable Colloidal Polyaniline Microparticles

Fang Kun;Li Shou-Ping;Tao Xue-Yu;Wang Qing-Lu;Mao Wei-Min;Wu Qi-Ye   

  1. College of Polymer Science & Engineering, Qingdao University of Science and Technology, Qingdao 266042; College of Material Science & Engineering, Beijing University of Science and Technology, Beijing 100083
  • Received:2003-05-06 Revised:2003-09-30 Published:2004-01-15
  • Contact: Wu Qi-Ye

Abstract: Water soluble and stable colloidal polyaniline (PAn) aqueous dispersions were obtained using poly(vinyl pyrrolidone) (PVP) as steric stabilizer via dispersion polymerization. The morphology and size of PAn were characerized by transmission electron microscopy (TEM). Doped and dedoped PAn-PVP in the aqueous dipersions were investigated via the UV-Vis spectra. The results showed that when the content of PAn was low(wPAn< 16.78%), the morphology of PAn-PVP was rice-grain particles. And when the content of PAn was high (wPAn >23.22%), the morphology of PAn-PVP was spherical particles .The PAn-PVP particles were composites.

Key words: Dispersion polymerization, Polyaniline, Colloidal particles, Steric stabilizer