Poly (vinyl alcohol - aniline) water soluble composite as corrosion inhibitor for mild steel in 1 M HCl

被引：33
作者：
Karthikaiselvi, R. [1 ]
Subhashini, S. [2 ]
Rajalakshmi, R. [2 ]
机构：
[1] Kumaraguru Coll Technol, Dept Chem, Coimbatore 641049, Tamil Nadu, India
[2] Avinashilingam Univ Women, Dept Chem, Coimbatore 641049, Tamil Nadu, India
来源：
ARABIAN JOURNAL OF CHEMISTRY | 2012年 / 5卷 / 04期
关键词：
Composite materials; Chemical synthesis; Electrochemical impedance; Adsorption; Corrosion; IRON; ACID;
D O I：
10.1016/j.arabjc.2010.09.020
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Poly (vinyl alcohol - aniline) PVAA composite was tested for its performance in protecting mild steel MS against corrosion in 1 M HCl. The inhibitive parameters were evaluated by means of weight loss, electrochemical polarization and impedance methods. Results indicated that the addition of PVAA to the acid reduces the corrosion of the metal. Inhibition efficiency increases with increase in inhibitor concentration. The results further revealed that PVAA at a concentration of 2000 ppm furnishes a maximum of 92% inhibition efficiency. Thermodynamic parameters such as free energy of adsorption, heat of adsorption, etc., had been evaluated from temperature studies. The adsorption of PVAA followed Langmuir and Temkin adsorption isotherms. Polarization curves revealed that PVAA is a mixed inhibitor. (C) 2010 King Saud University. Production and hosting by Elsevier B. V. All rights reserved.
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收藏
页码：517 / 522
页数：6
相关论文
共 29 条
[1]   Fatty acid oxadiazoles as acid corrosion inhibitors for wild steel [J].
Ajmal, M ;
Jamal, D ;
Quraishi, MA .
ANTI-CORROSION METHODS AND MATERIALS, 2000, 47 (02) :77-82
[2]   Corrosion inhibition of mild steel by some schiff base compounds in hydrochloric acid [J].
Ashassi-Sorkhabi, H ;
Shaabani, B ;
Seifzadeh, D .
APPLIED SURFACE SCIENCE, 2005, 239 (02) :154-164
[3]  
Bag SK, 1996, J INDIAN CHEM SOC, V73, P113
[4]   A pyrazine derivative as corrosion inhibitor for steel in sulphuric acid solution [J].
Bouklah, M ;
Attayibat, A ;
Kertit, S ;
Ramdani, A ;
Hammouti, B .
APPLIED SURFACE SCIENCE, 2005, 242 (3-4) :399-406
[5]  
DAMASKIN BB, 1971, ABSORPTION ORGANIC C
[6]  
Debri I., 2006, MATER CHEM PHYS, V98, P16
[7]  
El A.Y., 2006, CORROS SCI, V45, P316
[8]   The inhibition action of 3,6-bis(2-methoxyphenyl)-1,2-dihydro-1,2,4,5-tetrazine on the corrosion of mild steel in acidic media [J].
Elkadi, L ;
Mernari, B ;
Traisnel, M ;
Bentiss, F ;
Lagrenée, M .
CORROSION SCIENCE, 2000, 42 (04) :703-719
[9]   Polyaniline-poly (vinyl alcohol) conducting composite: material with easy processability and novel application potential [J].
Gangopadhyay, R ;
De, A ;
Ghosh, G .
SYNTHETIC METALS, 2001, 123 (01) :21-31
[10]   THE ELECTROCHEMICAL TESTING OF POLYACRYLIC-ACID AND ITS DERIVATIVES AS INHIBITORS OF CORROSION [J].
GRCHEV, T ;
CVETKOVSKA, M ;
SCHULTZE, JW .
CORROSION SCIENCE, 1991, 32 (01) :103-112
123