Fabrication of ZnO‐functionalized polypyrrole microcomposite as a protective coating to enhance anticorrosion performance of low carbon mild steel

ABSTRACT 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...

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Published in:Journal of applied polymer science 2020-01, Vol.137 (4), p.n/a
Main Authors: Satpal, Sudhakar, Bhopale, Abhijit, Deshpande, Pravin, Athawale, Anjali
Format: Article
Language:English
Subjects:
Bonding strength
Carbon
coatings
Composite materials
composites
conducting polymers
Corrosion prevention
Corrosion resistance
Corrosion resistant steels
Low carbon steels
Maintenance management
Materials science
Polymers
Polypyrroles
Protective coatings
surfaces and interfaces
Zinc oxide
Zinc oxides
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Summary:ABSTRACT 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 (Icorr = 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.
ISSN:0021-8995
1097-4628
DOI:10.1002/app.48319