Achieving a high‐performance anti‐corrosive polyvinyl ester based on bisphenol a coating by addition of polyaniline‐Cu‐based metal organic framework composite

Corrosion of steel is one of the challenging issues that researchers has focused on it. Among corrosion control methods, organic coatings with suitable lifetime and efficiency are a great of interest. In the present research, polyaniline‐ copper‐based metal organic framework (PANI‐Cu‐MOF) is synthes...

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Bibliographic Details
Published in:Polymer composites 2025-01, Vol.46 (1), p.387-399
Main Authors: Bolghari, Amir Jafari, Mostafapour, Amir, Hosseini, Mir Ghasem, Sefidi, Pariya Yardani
Format: Article
Language:English
Subjects:
Bisphenol A
Control methods
Copper
Corrosion
Corrosion prevention
Corrosion resistance
Corrosion resistant steels
Electrochemical impedance spectroscopy
Metal-organic frameworks
metal–organic framework
Organic coatings
Oxidation
Penetration resistance
Performance evaluation
polyaniline
Polyanilines
Polyvinyl esters
Resins
ST37
vinyl ester resin
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Summary:Corrosion of steel is one of the challenging issues that researchers has focused on it. Among corrosion control methods, organic coatings with suitable lifetime and efficiency are a great of interest. In the present research, polyaniline‐ copper‐based metal organic framework (PANI‐Cu‐MOF) is synthesized using in‐situ oxidation polymerization method and successfully characterized with different techniques. Then, 0.5, 1, and 1.5 wt. % of PANI‐Cu‐MOF composite are added to vinyl ester (VE) resin based on bisphenol A and coated on ST37 steel. The performance of the as‐prepared coatings on ST37 is evaluated using electrochemical impedance spectroscopy (EIS) for 360 h. The EIS results showed that loading of PANI‐Cu‐MOF (0.5 wt. %) in VE led to the highest protective properties against aggressive species with |Z|0.01 Hz = 6.76 × 107 Ωcm2 after 360 h. The uniform distribution of PANI‐Cu‐MOF composite in VE and its hydrophobic property causes a delay in the penetration of the corrosive species into the coating, thus increasing the corrosion resistance. Highlights PANI‐Cu‐MOF composite is embedded to VE resin as novel anti‐corrosive pigment. The highest Rcoat are achieved for VE‐PANI‐Cu‐MOF 0.5 wt. %. In the presence of PANI‐Cu‐MOF, the corrosive species penetrations decreased. VE/PANI‐Cu‐MOF on ST37 as effective anticorrosive coating.
ISSN:0272-8397
1548-0569
DOI:10.1002/pc.28994