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Characterization and anticorrosive properties of poly(2,3‐dimethylaniline)/TiO 2 composite synthesized by emulsion polymerization
Author(s) -
Li Zhitao,
Ma Li,
Gan Mengyu,
Yan Jun,
Hu Haifeng,
Zeng Jun,
Chen Feifei
Publication year - 2013
Publication title -
polymer composites
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.577
H-Index - 82
eISSN - 1548-0569
pISSN - 0272-8397
DOI - 10.1002/pc.22477
Subject(s) - materials science , dielectric spectroscopy , emulsion polymerization , polymerization , composite number , sulfonic acid , scanning electron microscope , corrosion , chemical engineering , composite material , fourier transform infrared spectroscopy , cyclic voltammetry , nuclear chemistry , electrochemistry , polymer chemistry , polymer , electrode , chemistry , engineering
Abstract Poly(2,3‐dimethylaniline)/TiO 2 composite (PTC) was prepared by emulsion polymerization using dodecyl benzene sulfonic acid as emulsifier and dopant. The structure of PTC was characterized by Fourier transformation infrared spectroscopy, wide‐angle X‐ray diffraction, and field emission scanning electron microscopy. Effect of TiO 2 content on the PTC properties was studied by tafel polarization curves, electrochemical impedance spectroscopy, polymerization yield, and cyclic voltammetry measurements. The results showed that the anticorrosion property and electrochemical activity of PTC reached a maximum level when the content of TiO 2 was 15%. Epoxy coatings containing poly(2,3‐dimethylaniline) (P(2,3‐DMA)) and PTC, respectively, were painted on steel and accelerated electrochemical corrosion tests were performed to evaluate the anticorrosion property of the coatings in 3.5% NaCl solution. The results showed that the PTC coating had higher corrosion resistance than that of P(2,3‐DMA). POLYM. COMPOS., 2013. © 2013 Society of Plastics Engineers