Chem. J. Chinese Universities

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Surface Modification and Anticorrosive Properties of Polyaniline

GAN Meng-Yu, LI Zhi-Chun, MA Li, HAO Shao-Na, JIA Chun-Yue, LIU Xing-Min   

  1. College of Chemistry & Chemical Engineering, Chongqing University, Chongqing 400030, China
  • Received:2011-03-30 Published:2012-02-16

Abstract:

The surface of PANI was modified by octamethylcyclotetrasiloxane(D4). The effects of reaction temperature, time, the amount of monomer and pH on the grafting effect, dispersibility and corrosion potential were investigated by characterizing cyclic voltammetry(CV), polarization curves(Tafel) and grafting yield of the modified PANI. Besides, the structures and properties of PANI before and after modifying were compared with CV, UV-Vis, FTIR spectra, X-ray diffraction(XRD) and thermogravimetry(TGA). The results indicate that the surface of PANI is modified effectively by D4, and the dispersibility, dispersibility stability and anti-corrosion of PANI are enhanced significantly.

Key words: Polyaniline, Surface modification, Octamethylcyclotetrasiloxane, Anticorrosion

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