Highly hydrophobic polyaniline nanoparticles for anti-corrosion epoxy coatings

Huaiyin Chen; Huizhou Fan; Nan Su; Ruoyu Hong; Xuesong Lu

doi:10.1016/j.cej.2021.130540

Highly hydrophobic polyaniline nanoparticles for anti-corrosion epoxy coatings

Huaiyin Chen
, Huizhou Fan
, Nan Su
, Ruoyu Hong^*
, Xuesong Lu

^*Corresponding author for this work

School of Engineering & Physical Sciences

Research output: Contribution to journal › Article › peer-review

198 Citations (Scopus)

Abstract

Perfluorooctanoic acid doped polyaniline (PFOA/PANI) nanoparticles were successfully prepared through ultrasonication-assisted oxidation polymerization. The prepared PFOA/PANI nanoparticles exhibited high hydrophobicity and good dispersibility in ethanol, which could uniformly distribute in epoxy resin (EP) coatings to enhance their anti-penetrant efficiency towards corrosive media. The corrosion protection properties of PANI-contained coatings on Q215 steel were evaluated and compared through electrochemical impedance spectroscopy measurements in brine. The experimental results demonstrated the PFOA/PANI/EP coatings possessed higher corrosion performance than the EP coatings and HCl-doped PANI-contained EP coatings. Besides, dedoped PFOA molecules from PFOA/PANI nanoparticles can be adsorbed on the surface of steel to form a hydrophobic corrosion inhibition layer, which further improves the corrosion resistance. The impedance of PFOA/PANI/EP coatings continuously increased after the coatings were immersed in brine for more than 2 days, and the impedance modulus at 0.01 Hz was higher than 6 × 10⁸ Ω·cm² after 9 days. The novel method for the preparation of hydrophobic PANI nanoparticles proposed in this work may provide new ideas and methods for developing more high-performance anti-corrosion materials and promoting their applications in corrosion protection.

Original language	English
Article number	130540
Journal	Chemical Engineering Journal
Volume	420
Early online date	27 May 2021
DOIs	https://doi.org/10.1016/j.cej.2021.130540
Publication status	Published - 15 Sept 2021

Keywords

Anti-corrosion coatings
Corrosion inhibition
Hydrophobicity
Polyaniline

ASJC Scopus subject areas

General Chemistry
Environmental Chemistry
General Chemical Engineering
Industrial and Manufacturing Engineering

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10.1016/j.cej.2021.130540

Cite this

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title = "Highly hydrophobic polyaniline nanoparticles for anti-corrosion epoxy coatings",

abstract = "Perfluorooctanoic acid doped polyaniline (PFOA/PANI) nanoparticles were successfully prepared through ultrasonication-assisted oxidation polymerization. The prepared PFOA/PANI nanoparticles exhibited high hydrophobicity and good dispersibility in ethanol, which could uniformly distribute in epoxy resin (EP) coatings to enhance their anti-penetrant efficiency towards corrosive media. The corrosion protection properties of PANI-contained coatings on Q215 steel were evaluated and compared through electrochemical impedance spectroscopy measurements in brine. The experimental results demonstrated the PFOA/PANI/EP coatings possessed higher corrosion performance than the EP coatings and HCl-doped PANI-contained EP coatings. Besides, dedoped PFOA molecules from PFOA/PANI nanoparticles can be adsorbed on the surface of steel to form a hydrophobic corrosion inhibition layer, which further improves the corrosion resistance. The impedance of PFOA/PANI/EP coatings continuously increased after the coatings were immersed in brine for more than 2 days, and the impedance modulus at 0.01 Hz was higher than 6 × 108 Ω·cm2 after 9 days. The novel method for the preparation of hydrophobic PANI nanoparticles proposed in this work may provide new ideas and methods for developing more high-performance anti-corrosion materials and promoting their applications in corrosion protection.",

keywords = "Anti-corrosion coatings, Corrosion inhibition, Hydrophobicity, Polyaniline",

author = "Huaiyin Chen and Huizhou Fan and Nan Su and Ruoyu Hong and Xuesong Lu",

note = "Funding Information: This work was supported by Fuzhou University Testing Fund of precious apparatus (Nos. 2021T023 , 2020T025 ), Minjiang Scholarship of Fujian Province (No. Min-Gaojiao [2010]-117), Central Government Guiding Special funds for Local Science and Technology Development (No. 830170778 ), R\&D Fund for Strategic Emerging Industry of Fujian Province (No. 82918001 ), and International Cooperation Project of Fujian Science and Technology Department (No. 830170771 ). Publisher Copyright: {\textcopyright} 2021 Elsevier B.V.",

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doi = "10.1016/j.cej.2021.130540",

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journal = "Chemical Engineering Journal",

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T1 - Highly hydrophobic polyaniline nanoparticles for anti-corrosion epoxy coatings

AU - Chen, Huaiyin

AU - Fan, Huizhou

AU - Su, Nan

AU - Hong, Ruoyu

AU - Lu, Xuesong

N1 - Funding Information: This work was supported by Fuzhou University Testing Fund of precious apparatus (Nos. 2021T023 , 2020T025 ), Minjiang Scholarship of Fujian Province (No. Min-Gaojiao [2010]-117), Central Government Guiding Special funds for Local Science and Technology Development (No. 830170778 ), R&D Fund for Strategic Emerging Industry of Fujian Province (No. 82918001 ), and International Cooperation Project of Fujian Science and Technology Department (No. 830170771 ). Publisher Copyright: © 2021 Elsevier B.V.

PY - 2021/9/15

Y1 - 2021/9/15

N2 - Perfluorooctanoic acid doped polyaniline (PFOA/PANI) nanoparticles were successfully prepared through ultrasonication-assisted oxidation polymerization. The prepared PFOA/PANI nanoparticles exhibited high hydrophobicity and good dispersibility in ethanol, which could uniformly distribute in epoxy resin (EP) coatings to enhance their anti-penetrant efficiency towards corrosive media. The corrosion protection properties of PANI-contained coatings on Q215 steel were evaluated and compared through electrochemical impedance spectroscopy measurements in brine. The experimental results demonstrated the PFOA/PANI/EP coatings possessed higher corrosion performance than the EP coatings and HCl-doped PANI-contained EP coatings. Besides, dedoped PFOA molecules from PFOA/PANI nanoparticles can be adsorbed on the surface of steel to form a hydrophobic corrosion inhibition layer, which further improves the corrosion resistance. The impedance of PFOA/PANI/EP coatings continuously increased after the coatings were immersed in brine for more than 2 days, and the impedance modulus at 0.01 Hz was higher than 6 × 108 Ω·cm2 after 9 days. The novel method for the preparation of hydrophobic PANI nanoparticles proposed in this work may provide new ideas and methods for developing more high-performance anti-corrosion materials and promoting their applications in corrosion protection.

AB - Perfluorooctanoic acid doped polyaniline (PFOA/PANI) nanoparticles were successfully prepared through ultrasonication-assisted oxidation polymerization. The prepared PFOA/PANI nanoparticles exhibited high hydrophobicity and good dispersibility in ethanol, which could uniformly distribute in epoxy resin (EP) coatings to enhance their anti-penetrant efficiency towards corrosive media. The corrosion protection properties of PANI-contained coatings on Q215 steel were evaluated and compared through electrochemical impedance spectroscopy measurements in brine. The experimental results demonstrated the PFOA/PANI/EP coatings possessed higher corrosion performance than the EP coatings and HCl-doped PANI-contained EP coatings. Besides, dedoped PFOA molecules from PFOA/PANI nanoparticles can be adsorbed on the surface of steel to form a hydrophobic corrosion inhibition layer, which further improves the corrosion resistance. The impedance of PFOA/PANI/EP coatings continuously increased after the coatings were immersed in brine for more than 2 days, and the impedance modulus at 0.01 Hz was higher than 6 × 108 Ω·cm2 after 9 days. The novel method for the preparation of hydrophobic PANI nanoparticles proposed in this work may provide new ideas and methods for developing more high-performance anti-corrosion materials and promoting their applications in corrosion protection.

KW - Anti-corrosion coatings

KW - Corrosion inhibition

KW - Hydrophobicity

KW - Polyaniline

UR - https://www.scopus.com/pages/publications/85107159152

U2 - 10.1016/j.cej.2021.130540

DO - 10.1016/j.cej.2021.130540

M3 - Article

AN - SCOPUS:85107159152

SN - 1385-8947

VL - 420

JO - Chemical Engineering Journal

JF - Chemical Engineering Journal

M1 - 130540

ER -

Highly hydrophobic polyaniline nanoparticles for anti-corrosion epoxy coatings

Abstract

Keywords

ASJC Scopus subject areas

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