期刊
POLYMER
卷 58, 期 -, 页码 60-66出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.polymer.2014.12.033
关键词
Polyaniline; Anticorrosion; Electrochromic
资金
- National Natural Science Foundation of China [21104024, 21274052]
- Jilin Province Science and Technology Department project [20130522139JH]
- Functional Research Funds for the Central Universities [JCKY-QKJC07]
- Open Project of State Key Laboratory of Superhard Materials (Jilin University), China [201403]
- Army Research Office [W911NF1410177]
In this study, a novel polyurea with oligoaniline pendants was prepared in a single step from readily accessible monomer. Fourier-transform infrared spectra (FTIR), nuclear magnetic resonance (NMR) and gel permeation chromatography (GPC) were employed to characterize the molecular structure of the obtained electroactive polyurea (EPU). Its spectroscopic properties and thermal stability were also detected and evaluated. The electrochemical activity of EPU was explored by cyclic voltammetry in 0.5 M H2SO4 confirming a surface controlled process. The spectrochronoamperometry was applied to investigate the electrochromic performance of EPU/ITO electrode, which exhibited good electrochromic properties with high contrast value, moderate switching times, acceptable coloration efficiency and excellent stability. Furthermore, corrosive protection of the EPU coatings on the cold rolled steel (CRS) in 5 wt% NaCl solution were studied by tafel plots analysis and electrochemical impedance spectroscopy. The results indicated that the synthesized EPU is a good candidate for inhibiting the corrosion of CRS in brine medium. (C) 2014 Elsevier Ltd. All rights reserved.
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