Abstract
This study examines perfluorocyclobutyl (PFCB) aromatic ether polymers and demonstrates, for the first time, their potential as corrosion-resistant coatings. PFCB polymers are a distinct class of semi-fluorinated polymers that are based on thermal cyclopolymerization of aromatic trifluorovinyl ethers. They combine the flexibility and thermal stability of aromatic ethers with strong fluorocarbon linkages. Electrochemical impedance spectroscopy and potentiodynamic scans reveal that PFCB coatings display protective barrier properties against corrosion attack nearly equal to that of polyvinylidene fluoride (PVDF) coatings. The PFCBs also show excellent adhesion to metal surfaces and nonstick properties comparable to that of PVDF. Combined with their high thermal resistance, PFCBs may lead to new corrosion-resistant coatings in marine, oil and gas, and other applications.
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The authors acknowledge support from Mississippi State University, Department of Chemistry and Marvin B. Dow Advanced Composites Institute.
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This work is dedicated to Prof. Charles U. Pittman, Jr. on the occasion of his 80th birthday.
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Caldona, E.B., Smith, D.W. & Wipf, D.O. Protective action of semi-fluorinated perfluorocyclobutyl polymer coatings against corrosion of mild steel. J Mater Sci 55, 1796–1812 (2020). https://doi.org/10.1007/s10853-019-04025-2
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DOI: https://doi.org/10.1007/s10853-019-04025-2