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Fabrication of ZnO‐functionalized polypyrrole microcomposite as a protective coating to enhance anticorrosion performance of low carbon mild steel
Author(s) -
Satpal Sudhakar,
Bhopale Abhijit,
Deshpande Pravin,
Athawale Anjali
Publication year - 2020
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.48319
Subject(s) - polypyrrole , materials science , corrosion , fourier transform infrared spectroscopy , composite number , coating , composite material , raman spectroscopy , carbon steel , zinc , chemical engineering , oxide , conductive polymer , polymer , metallurgy , engineering , polymerization , physics , optics
In the present work, PPy, ZnO, and polypyrrole/zinc oxide (PPy/ZnO) microcomposites (1, 2, and 5 wt%) were prepared and their properties have been tuned for anticorrosion applications on low carbon mild steel. The synthesized products: ZnO, PPy, and composites were characterized by various sophisticated analytical techniques such as XRD, FTIR, Raman, FESEM, EDX, UV–VIS, TGA, and BET. The band frequencies observed at 480 and 588 cm −1 in FTIR spectrum correspond to stretching vibrations of Zn‐O and N‐H bonds, respectively, broadening of the bands in the composites indicate strong interactions between ZnO and PPy matrix. The potentiodynamic polarization study of PPy and PPy/ZnO composite was carried out in 3.5% NaCl solution to investigate the corrosion resistance efficiency. PPy/1 wt% ZnO (I corr = 190 nA) composite coating on low carbon mild steel was observed to exhibit best corrosion protection property compared to PPy (121 μA), 2 and 5 wt% ZnO (242, 295 nA) composites. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019 , 136 , 48319.