Polyester-Based Coatings with a Metal Organic Framework: An Experimental Study for Corrosion Protection

Author:

Plesu Nicoleta1ORCID,Macarie Lavinia1,Tara-Lunga Mihali Milica1,Maranescu Bianca2,Visa Aurelia1ORCID,Jurcau Dorin3

Affiliation:

1. “Coriolan Dragulescu” Institute of Chemistry, 24 Mihai Viteazu Bv., 300223 Timisoara, Romania

2. Faculty of Chemistry, Biology, Geography, West University of Timisoara, 16 Pestalozzi Street, 300115 Timisoara, Romania

3. Elkim Special SRL, 21Constantin cel Mare St., 300290 Timisoara, Romania

Abstract

Polyester coatings containing metal-organic framework (MOF) corrosion inhibitors were studied for their ability to protect carbon steel. The polyester coating was synthesized in the laboratory using microwave (MW) radiation to polycondense soy fatty acids, phthalic anhydride, and pentaerythritol-type polyols. The incorporation of these inhibitors into the polyester coating altered the behavior of the carbon steel, resulting in enhanced corrosion protection compared with uncoated carbon steel and polyester alone. Polyester with a 49% oil content, prepared using fatty acids from soybeans, phthalic anhydride, and pentaerythritol synthesized under microwave irradiation, and with a content of 3 mM Mg(GLY), exhibited a notable enhancement in the anticorrosive properties of the alkyd coating. The inhibition mechanism of corrosion was investigated through electrochemical impedance spectroscopy analysis.

Publisher

MDPI AG

Subject

Engineering (miscellaneous),Ceramics and Composites

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