Micelles-based self-healing coating for improved protection of metal

Ye Ying; Zequn Liu; Juanjuan Fan; Nan Wei; Xiaoyu Guo; Yiping Wu; Ying Wen; Haifeng Yang

Arabian Journal of Chemistry (Jan 2020)

Micelles-based self-healing coating for improved protection of metal

Ye Ying,
Zequn Liu,
Juanjuan Fan,
Nan Wei,
Xiaoyu Guo,
Yiping Wu,
Ying Wen,
Haifeng Yang

Affiliations

Ye Ying: The Education Ministry Key Lab of Resource Chemistry, Shanghai Key Laboratory of Rare Earth Functional Materials and Department of Chemistry, Shanghai Normal University, Shanghai 200234, PR China
Zequn Liu: The Education Ministry Key Lab of Resource Chemistry, Shanghai Key Laboratory of Rare Earth Functional Materials and Department of Chemistry, Shanghai Normal University, Shanghai 200234, PR China
Juanjuan Fan: The Education Ministry Key Lab of Resource Chemistry, Shanghai Key Laboratory of Rare Earth Functional Materials and Department of Chemistry, Shanghai Normal University, Shanghai 200234, PR China
Nan Wei: The Education Ministry Key Lab of Resource Chemistry, Shanghai Key Laboratory of Rare Earth Functional Materials and Department of Chemistry, Shanghai Normal University, Shanghai 200234, PR China
Xiaoyu Guo: The Education Ministry Key Lab of Resource Chemistry, Shanghai Key Laboratory of Rare Earth Functional Materials and Department of Chemistry, Shanghai Normal University, Shanghai 200234, PR China
Yiping Wu: The Education Ministry Key Lab of Resource Chemistry, Shanghai Key Laboratory of Rare Earth Functional Materials and Department of Chemistry, Shanghai Normal University, Shanghai 200234, PR China
Ying Wen: The Education Ministry Key Lab of Resource Chemistry, Shanghai Key Laboratory of Rare Earth Functional Materials and Department of Chemistry, Shanghai Normal University, Shanghai 200234, PR China
Haifeng Yang: Corresponding author.; The Education Ministry Key Lab of Resource Chemistry, Shanghai Key Laboratory of Rare Earth Functional Materials and Department of Chemistry, Shanghai Normal University, Shanghai 200234, PR China

Journal volume & issue: Vol. 13, no. 1
pp. 3137 – 3148

Abstract

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In this work, an eco-friendly corrosion inhibitor was synthesized by embedding 4-methyl-4H-1,2,4-triazole-3-thiol (4-MTTL) into phytic acid (IP6) micelles via heating (donated as IP6@4-MTTLx). The corrosion inhibitor, IP6@4-MTTLx microcapsules with self-healing capability, can be used for metal protection from corrosion in 3.5 wt% NaCl aqueous solution. By means of electrochemical impedance spectroscopy (EIS) and electrochemical polarization, the high inhibition performance of such micelle-based coating on the model metal of copper has been investigated, which is attributed to the synergistic effect of the 4-MTTL molecules and the IP6@4-MTTLx microcapsules. Damage to the coating by external force can be self-healed by leakage of 4-MTTL inside IP6@4-MTTLx microcapsules to seal physically and chemically the cracks. Keywords: Copper, Corrosion inhibitor, Self-healing, Phytic acid micelles, 4-Methyl-4H-1,2,4-triazole-3-thiol (4-MTTL)

Published in Arabian Journal of Chemistry

ISSN: 1878-5352 (Print)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Science: Chemistry
Website: http://www.journals.elsevier.com/arabian-journal-of-chemistry/

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