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Effect of polyvinylpyrrolidone - polyethylene glycol blends on the corrosion inhibition of aluminium in HCl solution
S. A. Umoren; U. M. Eduok; M. M. Solomon
2014
Source PublicationPigment & Resin Technology
ISSN0369-9420
Volume43Issue:5Pages:299-313
AbstractPurpose - The purpose of this paper is to investigate the effect of polyethylene glycol (PEG), polyvinylpyrrolidone (PVP) and blended formulations on the corrosion inhibition of aluminium in HCl solutions at 30-60 degrees C and to study the mechanism of action. Design/methodology/approach - The inhibitive effect of the homopolymers and polymer blend was assessed using weight loss and hydrogen evolution methods at 30 and 60 degrees C. The morphology of the corroding aluminium surface without and with the additives was visualized using atomic force microscopy. The trend of inhibition efficiency with temperature was used to propose the mechanism of inhibition and type of adsorption. Findings - Results obtained show that inhibition efficiency (eta%) increases with increase in concentration of the polymers but decreases with increase in temperature. The inhibition efficiency of the homopolymers and their blends decreased with rise in temperature. Inhibition efficiency was found to be synergistically enhanced on blending the two homopolymers with highest inhibition efficiency obtained for (PEG: PVP) blending ratio of 1: 3. The phenomenon of physical adsorption is proposed from the trend of inhibition efficiency with temperature. Research limitations/implications - The mechanistic aspect of the corrosion inhibition can be better understood using electrochemical studies such as potentiodynamic polarization and electrochemical impedance spectroscopy. Originality/value - Studies involving the use of polymer blends/mixtures as corrosion inhibitor for metals in corrosive environments are scarce. The results suggest that the mixture could find practical application in corrosion control in aqueous acidic environment. The data obtained would form part of database on the use of polymer-polymer mixtures to control acid-induced corrosion of metal.
description.department[umoren, s. a.] univ uyo, dept chem, mat & corros protect res grp, uyo, nigeria. [umoren, s. a.] chinese acad sci, inst met res, state key lab corros & protect, shenyang 110016, peoples r china. [eduok, u. m.] king fahd univ petr & minerals, dept chem, dhahran 31261, saudi arabia. [solomon, m. m.] akwa ibom state polytech, dept sci technol, ikot osurua, nigeria. ; umoren, sa (reprint author), univ uyo, dept chem, mat & corros protect res grp, uyo, nigeria. ; saviourumoren@yahoo.com
KeywordCorrosion Corrosion Inhibitors Acids Polymer Blend Mild-steel Corrosion Sulfuric-acid-solution Halide-ions Polyvinyl-alcohol Hydrochloric-acid Aqueous Extract Alkaline-medium Molecular-structure Polyacrylic-acid H2so4 Solutions
URL查看原文
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/73394
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
S. A. Umoren,U. M. Eduok,M. M. Solomon. Effect of polyvinylpyrrolidone - polyethylene glycol blends on the corrosion inhibition of aluminium in HCl solution[J]. Pigment & Resin Technology,2014,43(5):299-313.
APA S. A. Umoren,U. M. Eduok,&M. M. Solomon.(2014).Effect of polyvinylpyrrolidone - polyethylene glycol blends on the corrosion inhibition of aluminium in HCl solution.Pigment & Resin Technology,43(5),299-313.
MLA S. A. Umoren,et al."Effect of polyvinylpyrrolidone - polyethylene glycol blends on the corrosion inhibition of aluminium in HCl solution".Pigment & Resin Technology 43.5(2014):299-313.
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