Thermal effects on the process of electropolymerization of pyrrole on mild steel

S. U. Rahman; M. S. Ba-Shammakh

doi:10.1016/S0379-6779(03)00369-2

Thermal effects on the process of electropolymerization of pyrrole on mild steel

S. U. Rahman^*, M. S. Ba-Shammakh

^*Corresponding author for this work

Department of Chemical Engineering

Research output: Contribution to journal › Article › peer-review

34 Scopus citations

Abstract

Polypyrrole films were electrosynthesized on mild steel with oxalic acid electrolyte at varying temperatures (25-65°C), current density (0.5-6.0mA/cm²) and pH (2.0, 4.0, 7.0 and 8.5). The concentrations of pyrrole and oxalic acid were maintained at 0.1M each in galvanostatic experiments. The results show that lower temperatures favor the formation of polypyrrole on mild steel in acidic media. At higher temperature and lower current densities, oscillations in electrode potentials were observed. The film quality was poorest at pH 7.0, while very adherent and compact films were obtained in alkaline medium. Higher temperature in alkaline media favors the formation of better polypyrrole films in contrast with acidic media.

Original language	English
Pages (from-to)	207-223
Number of pages	17
Journal	Synthetic Metals
Volume	140
Issue number	2-3
DOIs	https://doi.org/10.1016/S0379-6779(03)00369-2
State	Published - 27 Feb 2004

Bibliographical note

Funding Information:
Facilities and financial assistance provided by King Fahd University of Petroleum Minerals under grant CHE/C-PROTECTION/227 are gratefully acknowledged.

Keywords

Electropolymerization
Mild steel
Polypyrrole films

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

Access to Document

10.1016/S0379-6779(03)00369-2

Cite this

@article{df7fe29fd5634d669e9fa63dc4b2e71f,

title = "Thermal effects on the process of electropolymerization of pyrrole on mild steel",

abstract = "Polypyrrole films were electrosynthesized on mild steel with oxalic acid electrolyte at varying temperatures (25-65°C), current density (0.5-6.0mA/cm2) and pH (2.0, 4.0, 7.0 and 8.5). The concentrations of pyrrole and oxalic acid were maintained at 0.1M each in galvanostatic experiments. The results show that lower temperatures favor the formation of polypyrrole on mild steel in acidic media. At higher temperature and lower current densities, oscillations in electrode potentials were observed. The film quality was poorest at pH 7.0, while very adherent and compact films were obtained in alkaline medium. Higher temperature in alkaline media favors the formation of better polypyrrole films in contrast with acidic media.",

keywords = "Electropolymerization, Mild steel, Polypyrrole films",

author = "Rahman, \{S. U.\} and Ba-Shammakh, \{M. S.\}",

note = "Funding Information: Facilities and financial assistance provided by King Fahd University of Petroleum Minerals under grant CHE/C-PROTECTION/227 are gratefully acknowledged. ",

year = "2004",

month = feb,

day = "27",

doi = "10.1016/S0379-6779(03)00369-2",

language = "English",

volume = "140",

pages = "207--223",

journal = "Synthetic Metals",

issn = "0379-6779",

publisher = "Elsevier B.V.",

number = "2-3",

}

TY - JOUR

T1 - Thermal effects on the process of electropolymerization of pyrrole on mild steel

AU - Rahman, S. U.

AU - Ba-Shammakh, M. S.

N1 - Funding Information: Facilities and financial assistance provided by King Fahd University of Petroleum Minerals under grant CHE/C-PROTECTION/227 are gratefully acknowledged.

PY - 2004/2/27

Y1 - 2004/2/27

N2 - Polypyrrole films were electrosynthesized on mild steel with oxalic acid electrolyte at varying temperatures (25-65°C), current density (0.5-6.0mA/cm2) and pH (2.0, 4.0, 7.0 and 8.5). The concentrations of pyrrole and oxalic acid were maintained at 0.1M each in galvanostatic experiments. The results show that lower temperatures favor the formation of polypyrrole on mild steel in acidic media. At higher temperature and lower current densities, oscillations in electrode potentials were observed. The film quality was poorest at pH 7.0, while very adherent and compact films were obtained in alkaline medium. Higher temperature in alkaline media favors the formation of better polypyrrole films in contrast with acidic media.

AB - Polypyrrole films were electrosynthesized on mild steel with oxalic acid electrolyte at varying temperatures (25-65°C), current density (0.5-6.0mA/cm2) and pH (2.0, 4.0, 7.0 and 8.5). The concentrations of pyrrole and oxalic acid were maintained at 0.1M each in galvanostatic experiments. The results show that lower temperatures favor the formation of polypyrrole on mild steel in acidic media. At higher temperature and lower current densities, oscillations in electrode potentials were observed. The film quality was poorest at pH 7.0, while very adherent and compact films were obtained in alkaline medium. Higher temperature in alkaline media favors the formation of better polypyrrole films in contrast with acidic media.

KW - Electropolymerization

KW - Mild steel

KW - Polypyrrole films

UR - https://www.scopus.com/pages/publications/1242330426

U2 - 10.1016/S0379-6779(03)00369-2

DO - 10.1016/S0379-6779(03)00369-2

M3 - Article

AN - SCOPUS:1242330426

SN - 0379-6779

VL - 140

SP - 207

EP - 223

JO - Synthetic Metals

JF - Synthetic Metals

IS - 2-3

ER -

Thermal effects on the process of electropolymerization of pyrrole on mild steel

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

Access to Document

Fingerprint

Cite this