Synthesis and characterization of polypyrrole/TiO2 composites on mild steel

Authors
Ferreira, CA Domenech, SC Lacaze, PC
Citation
Ca. Ferreira et al., Synthesis and characterization of polypyrrole/TiO2 composites on mild steel, J APPL ELEC, 31(1), 2001, pp. 49-56
Citations number
25
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
JOURNAL OF APPLIED ELECTROCHEMISTRY
ISSN journal
0021891X → ACNP
Volume
31
Issue
1
Year of publication
2001
Pages
49 - 56
Database
ISI
SICI code
0021-891X(200101)31:1<49:SACOPC>2.0.ZU;2-D
Abstract
The anodic codeposition of polypyrrole and TiO2 on AISI 1010 steel substrat es in oxalic acid medium was studied from the standpoint of their use as pr otective coatings against corrosion. The influence of surface treatment, pH , stirring and current density (j) on the current efficiency (gamma) and pi gment concentration incorporated in the polymer (C-c) were investigated. Th e highest C-c values (7.5%) were found at j = 5 mA cm(-)2, pH 4 and stirred baths. The composites were characterized by adherence and surface roughnes s tests, XPS, EDX, SEM, FTIR and cyclic voltammetry.