Corrosion Protection Performance of PVDF/PMMA-Blended Coatings by Electrochemical Impedance Method

The effect of mixing ratio on the corrosion protection of carbon steel coated by a film composed of poly(vinylidene) fluoride (PVDF) and poly(methyl methacrylate) (PMMA) was examined using electrochemical impedance spectroscopy. Surface crystallization behavior and thermal properties of the PVDF/PMM...

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Bibliographic Details
Published inJournal of electrochemical science and technology Vol. 9; no. 1; pp. 1 - 8
Main Authors Kim, Yun Hwan, Kwon, Yong Sung, Shon, Min Young, Moon, Myung Jun
Format Journal Article
LanguageKorean
Published 2018
Subjects
Corrosion
PMMA
Crystallization
PVDF
EIS
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Summary:The effect of mixing ratio on the corrosion protection of carbon steel coated by a film composed of poly(vinylidene) fluoride (PVDF) and poly(methyl methacrylate) (PMMA) was examined using electrochemical impedance spectroscopy. Surface crystallization behavior and thermal properties of the PVDF/PMMA coated carbon steel were evaluated using polarized optical microscopy and differential scanning calorimetry, respectively. A Maltese cross-pattern spherulite crystal was observed in the PVDF/PMMA coating film, which became more apparent with increasing PVDF content. The highest corrosion protection performance was achieved with 60 wt.% PVDF-coated carbon steel, and delamination and corrosion reactions were observed for 20 wt.% PVDF-coated carbon steel. Further, corrosion protection performance with an amorphous/crystal mixture (PVDF/PMMA, 60/40 (w/w)) was better than those observed in the amorphous domain and the perfect-crystal domain of the PVDF/PMMA blended coating system.
Bibliography:KISTI1.1003/JNL.JAKO201810748280980
ISSN:2093-8551
2288-9221