Corrosion Inhibition of Polyethylene Glycol on Carbon Steel in Sulfuric Acid Solutions and its Synergism with Schiff Base

Subject Areas :

sina jahadi ¹ , mojtaba nasr esfahani ²

1 - Department of Materials Engineering, Najafabad Branch, Islamic Azad University, Najafabad, Iran
2 - teacher.Department of chemistery engineering, Najafabad Branch, Islamic Azad University, Najafabad, Iran

Received: 2017-03-01 Accepted : 2018-06-18 Published : 2018-06-22

Keywords: Polyethylene glycol, Sulfuric Acid, Schiff base, Carbon Steel, Corrosion inhibition,

Abstract :

The inhibiting action of Schiff base and polyethylene glycol (Salpn-PEG) complexes on low-carbon steel corrosion in 0.5 M sulfuric acid was examined using weight loss, potentiodynamic polarization and spectroscopy electrochemical impedance (EIS) techniques. Schiff base N, N’-bis(salicyladehyde)-1,3-diaminopropane (Salpn) was synthesized by salicylaldehyde and 1,3- diaminopropane. PEG/Salpn complex with weight ratio 1:4, 2:4 and 3:4 of Salpn and PEG were prepared in methylene chloride solvent by a simple deporotonation procedure. Obtained Results show that PEG/IMZ complex is very effective corrosion inhibitor of carbon steel in the acid environment in compare with PEG, Salpn and noncomplex form of them. Maximum corrosion inhibition was obtained for PEG/Salpn complex with weight ratio 1:4 of Salpn and PEG. The inhibition efficiency increased with the increase in the temperature up to 45°C and decrease in higher temperatures. Results from all the corrosion tests were examined using SEM and are in reasonable good agreement. Adsorption thermodynamic data (〖K 〗_ads and 〖∆G〗_ads ) was calculated using the weight loss data

References:

 

[1]      ا. دانایی، ع. حسین زاده و م. حسین مداحی، "بررسی اثرات بازدارندگی خوردگی دو مشتق تیازولی برآلیاژ فولاد در اسید کلریدریک"، فرآیند های نوین در مهندسی مواد، شماره 4، 10، زمستان 1395.

 

[2]      م. ح. باقری، ح. کلهر و آ. قورچیان، "بررسی خاصیت بازدارنگی برخی از ایمیدازول‌ها به روی فلز مس به روش نظری و مقایسه آن با نتایج تجربی"، فرآیند های نوین در مهندسی مواد، شماره2، 9، تابستان 1394.

 

[3]      آ. فتاح الحسینی و ص. مومنی، "تاثیر بازدارنده ای بر پایه ایمیدازولین بر خوردگی فولاد API 5L Gr.B در آب دریای ساختگی"، فرآیند های نوین در مهندسی مواد، شماره1، 9، بهار 1394.

 

[4]    J. Hong, K. Zhen Peng & L. Yan, “Aminic nitrogen-bearing polydentate Schiff base compounds as corrosion inhibitors for iron inacidic media: a quantum chemical calculationˮ, Corrosion Scince, Vol. 50, pp. 565, 2008. 

 

[5]    S. Salimi, M. Nasr Esfahani, S. A. Umoren & E. Saebnoori, “Complexes of Imidazole with Poly (ethylene glycol) as a Corrosion Inhibitor for Carbon Steel in Sulphuric Acidˮ, Journal of Materials Engineering and Performance, Vol. 24, pp. 4696-4709, 2015.    

 

[6]    D. W. Arthur, A. Jonathan, P. O. Ameh & C. Anya, “A review on the assessment of polymeric materials used as corrosion inhibitor of metals and alloysˮ, International Journal of Industrial Chemistry, Vol. 4, pp. 1-9, 2013.

 

[7]    S. A. Umoren & O. Ogbobe, “Polyethylene Glycol and Polyvinyl Alcohol as Corrosion Inhibitors for Aluminium in Acidic Mediumˮ, Journal of Applied Polymer Science, Vol. 105, pp. 3363-3370, 2007.

 

[8]    A. K. Dubeya & G. Singhb, “Corrosion Inhibition of Mild steel in Sulphuric Acid Solution by Using Polyethylene Glycol Ether(PEGME)ˮ, Portugaliae Electrochemica Acta, Vol. 25, pp. 221-235, 2007.

 

[9]    H. Ashassi Sorkhabi, N. Ghalebsaz Jeddi, “Inhibition effect of polyethylene glycol on the corrosion of carbon steel in sulphuric acidˮ, Materials Chemistry and Physics, Vol. 92, pp. 480-486-2005.

 

[10] M. Abdallah, H. E. Megahed, M. A. Radwan & E. Abdfattah, “Polyethylene Glycol Compounds As Corrosion Inhibitors for Aluminium in 0.5M Hydrochloric Acid Solutionsˮ, Journal of American Science, Vol. 8, pp. 49-55, 2012.

 

[11] S. A. Umoren, O. Ogbobe & E. E. Ebensoc, “The adsorption characteristics and synergistic inhibition between polyethylene glycol and halide ions for the corrosion of mild steel in acidic mediumˮ, Bulletin of Electrochemistry, Vol. 22, No. 4, pp. 155–167, 2006.

 

[12] H. Ashassi Sorkhabi, B. Shaabini & D. Seifzadeh “Corrosion inhibition of mild steel by some schiff base compounds in hydrochloric acidˮ, surface Sience, Vol. 239, pp. 154-164, 2005.

 

[13] A. Yurt, G. Bereket, A. Kivrak, A. Balaban, B. Erk, “Effect of Schiff bases containing pyridyl group as corrosion inhibitors for low carbon steel in 0.1 M HClˮ, Journal of Applied Electrochemistry, Vol. 35, pp. 1025-1032, 2005.

 

[14] M. Behpour, S. M. Ghoreishi, N.Mohammadi, N. Soltani & M. Salavati Niasari, “Investigation of some Schiff base compounds containing disulfide bond as HCl corrosion inhibitors for mild steelˮ, Corrosion Science, Vol. 52, pp. 4046-4057, 2010.

 

[15] H. Shokry, M. Yuasa, I. Sekine, R. M. Iss, H. Y. EL Baradie & G. K. Gommad, “Corrosion inhibition of mild steel by Schiff base compounds in various aqueous solutions -part-1ˮ, Corrosion Science, Vol. 40, No. 12, pp. 2173_2186, 1998.

 

[16] M. G. Hosseini, M. Ehteshamzadeh & T. Shahrabi, “Protection of mild steel corrosion with Schiff bases in 0.5 M H2SO4 solutionˮ, Electrochimica Acta, Vol. 52, pp. 3680-3685, 2007.

 

[17] Larabi, Y. Harek, O. Benali & S. Ghalem, “Prog. Org. Coatˮ, Vol. 54, pp. 256, 2005.

 

[18] X. Li, S. Deng, H. Fu & X. Xie, “Synergistic inhibition effects of bamboo leaf extract/majorˮ, Corrosion Science, Vol. 78, pp. 29-42, 2004.

 

[19] F. M. Donahue & K. Nobe, “Theory of organiccorrosion inhibitors: adsorption and liner free energy relationshipsˮ, J. Electrochem. Soc, Vol. 112, pp. 886-891, 1965.

 

  [20] A. K. Dubey & G. Singh, “Corrosion inhibition of mild steel in sulphuric acid solution by using polyethylene glycol methyl ether (PEGME)ˮ, Portugaliae Electrochimica Acta, Vol. 25, pp. 221-235, 2007.