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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Self-healing ability based on hydrogen bonds in organic coatings for corrosion protection of AA1200

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Author(s):
Nardeli, Jessica V. [1, 2] ; Fugivara, Cecilio S. [1] ; Taryba, Maryna [2] ; Montemor, M. F. [2] ; Benedetti, Assis V. [1]
Total Authors: 5
Affiliation:
[1] Univ Estadual Paulista UNESP, Inst Quim, BR-14800060 Araraquara, SP - Brazil
[2] Univ Lisbon, Inst Super Tecn, Dept Engn Quim, Ctr Quim Estrutural, CQE, DEQ, Av Rovisco Pais, P-1049001 Lisbon - Portugal
Total Affiliations: 2
Document type: Journal article
Source: Corrosion Science; v. 177, DEC 2020.
Web of Science Citations: 0
Abstract

Biobased polyurethane coatings derived from vegetable oils, with 2 different compositions, were prepared and applied on the AA1200 aluminum alloy to confer corrosion protection. The influence of the ratio between the polyester (flexible segment) and the prepolymer (rigid segment) was investigated. Infrared spectroscopy studies evidenced the difference between the areas of the bands (-NH) and optical and scanning electron microscopy evidenced the morphological features of the coating surface before and after immersion in aggressive medium. The barrier properties and anti-corrosion performance of the coatings were evaluated by electrochemical impedance spectroscopy and the results revealed an increase of impedance over the immersion time. Localized corrosion studies confirmed the self-healing effect in coatings formulated with the highest content of polyester. (AU)

FAPESP's process: 15/10554-9 - Polyurethanes Coatings derived from vegetable oil with and without addition of corrosion inhibitors: chemical, structural and corrosion resistance.
Grantee:Jéssica Verger Nardeli
Support Opportunities: Scholarships in Brazil - Doctorate
FAPESP's process: 18/09040-9 - Evaluation of the self-healing properties of polyurethane coatings derived from vegetable oils with and without addition of corrosion inhibitors using localized electrochemical techniques and the study of chemical and structural properties.
Grantee:Jéssica Verger Nardeli
Support Opportunities: Scholarships abroad - Research Internship - Doctorate