𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Synthesis and characterization of polypyrrole composites for corrosion protection of steel

✍ Scribed by M. Selvaraj; S. Palraj; K. Maruthan; G. Rajagopal; G. Venkatachari

Publisher
John Wiley and Sons
Year
2009
Tongue
English
Weight
616 KB
Volume
116
Category
Article
ISSN
0021-8995

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

Corrosion protection performance of epoxy polyamide coatings containing polypyrrole (PPy) composites for steel has been studied. PPy and its composites have been synthesized chemically using potassium permanganate and potassium per sulfate as oxidants. The PPy has been characterized by four probe method for conductivity, atomic absorption spectroscopy for elemental analysis, and Fourier transform infrared spectra for proving the incorporation of dopant in this polymers. The X‐ray diffraction (XRD) study has revealed the presence of manganese dioxide in the polymer. The elemental analysis and the thermo gravimetric analysis measurements showed that the presence of manganese dioxide in the polymer is about 75%. The thermal stability of deprotonated polymer has improved. Electrochemical impedance spectroscopic analysis indicated that the epoxy polyamide/PPy‐MnO~2~ coating showed the maximum resistance value of 2.196 × 10^7^ Ω cm^2^ after 30 days immersion in 3% sodium chloride solution. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2010

📜 SIMILAR VOLUMES

Two-step electrosynthesis of polypyrrole
Two-step electrosynthesis of polypyrrole for corrosion protection of stainless steel
✍ R. Zhu; G. Li; G. Huang 📂 Article 📅 2009 🏛 John Wiley and Sons 🌐 German ⚖ 179 KB

## Abstract Smooth polypyrrole (PPy) films were successfully electrosynthesized on a stainless steel (SS, 1Cr18Ni9) surface by a self‐catalytic two‐step process. SS substrate dissolution during PPy electrosynthesis was effectively depressed. The redox properties and corrosion behavior of PPy film c

Comparison between polyaniline-phosphate
Comparison between polyaniline-phosphate and polypyrrole-phosphate composite coatings for mild steel corrosion protection
✍ M. G. Hosseini; M. Sabouri; T. Shahrabi 📂 Article 📅 2006 🏛 John Wiley and Sons 🌐 German ⚖ 186 KB

## Abstract Polyaniline, polypyrrole and their composites have been deposited on mild steel electrode from aqueous oxalic acid solution by using cyclic voltammetry (CV) technique. The resulting coatings were characterized by scanning electron microscopy and EDX analysis. The protective performance

Corrosion protection of stainless steel
Corrosion protection of stainless steel by separate polypyrrole electrode in acid solutions
✍ J. Hu; H. Zhu; Y. Ma; T. Yi; X. Mao; A. Lin; F. Gan 📂 Article 📅 2010 🏛 John Wiley and Sons 🌐 German ⚖ 353 KB 👁 1 views

## Abstract Galvanic anodic protection (GAP) of stainless steels by doped polypyrrole (PPy) was investigated using chemically synthesized PPy. Separate PPy powder‐pressed electrodes with different surface areas were prepared. Electrochemical properties of PPy electrodes were studied by open circuit