Corrosion Inhibition Properties of Waterborne Polyurethane/Cerium Nitrate Coatings on Mild Steel

Waterborne polyurethane (WBPU)/cerium nitrate (Ce(NO3)3) dispersions were synthesized with different defined Ce(NO3)3 content. All pristine dispersions were stable with different poly(tetramethylene oxide) glycol (PTMG) number average molecular weights (Mn) of 650, 1000, and 2000. The interaction be...

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Bibliographic Details
Published inCoatings (Basel) Vol. 8; no. 1; p. 34
Main Authors Rahman, Mohammad, Zahir, Md, Haq, Md, Shehri, Dhafer, Kumar, A.
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.01.2018
Subjects
Cerium nitrate
Contact angle
Corrosion
Corrosion prevention
Dispersions
Fourier transforms
Galvanic corrosion
Infrared analysis
Infrared spectroscopy
Leaching
Low carbon steels
Polyurethane resins
Protective coatings
Spectrum analysis
X ray photoelectron spectroscopy
X-rays
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Summary:Waterborne polyurethane (WBPU)/cerium nitrate (Ce(NO3)3) dispersions were synthesized with different defined Ce(NO3)3 content. All pristine dispersions were stable with different poly(tetramethylene oxide) glycol (PTMG) number average molecular weights (Mn) of 650, 1000, and 2000. The interaction between the carboxyl acid salt group and Ce(NO3)3 was analyzed by Fourier-transform infrared spectroscopy (FT-IR) and X-ray photoelectron spectroscopy (XPS) techniques. Coating hydrophilicity, water swelling (%), water contact angle, leaching, and corrosion protection efficiency were all affected when using different Ce(NO3)3 content and PTMG molecular weights. The maximal corrosion protection of the WBPU coating was recorded using a higher molecular weight of PTMG with 0.016 mole Ce(NO3)3 content.
ISSN:2079-6412
2079-6412
DOI:10.3390/coatings8010034