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Anticorrosion Coatings from Poly (Aniline-co-2-Ethylaniline) Micro/Nanostructures

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Abstract

PANI copolymer micro/nanostructures with different surface wettability were obtained from the chemical oxidation copolymerization of aniline (Ani) with 2-ethyl aniline (EA) at diverse [EA]/[Ani+EA] molar ratios, by employing ammonium persulfate as an oxidant. The results revealed that the poly (aniline-co-2-ethyl aniline) (PANI-EA) copolymer micro/nanostructures exhibited satisfactory anticorrosion performance for carbon steel, and the corrosion protection efficiency increased with the increase of water repellent property. Poly (2-ethyl aniline) (PEA) showed the largest contact angle (CA=145°) and show the best corrosion protection for the carbon steel (η = 87.29%). It is found that the superior anticorrosion property of PEA is attributed to its high hydrophobicity, low conductivity and low porosity.

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Acknowledgements

The authors appreciate the financial supports of the National Natural Science Foundation of China (No. 41476059) and the Natural Science Foundation of Hebei Province (No. E2018108011).

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Authors and Affiliations

  1. Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao, 266003, China

    Cuijuan Xing, Xinling Song, Zhiming Zhang, Xiaohui Jiang & Liangmin Yu

  2. College of Chemical Engineering and Biological Technology, Xingtai University, Xingtai, 054001, China

    Cuijuan Xing

  3. Open Studio for Marine Corrosion and Protection, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao, 266100, China

    Cuijuan Xing, Xinling Song, Zhiming Zhang, Xiaohui Jiang & Liangmin Yu

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  1. Cuijuan Xing
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Xing, C., Song, X., Zhang, Z. et al. Anticorrosion Coatings from Poly (Aniline-co-2-Ethylaniline) Micro/Nanostructures. J. Ocean Univ. China 18, 1371–1381 (2019). https://doi.org/10.1007/s11802-019-3855-0

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