Journal of Ocean University of China

, Volume 18, Issue 6, pp 1371–1381 | Cite as

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

  • Cuijuan Xing
  • Xinling Song
  • Zhiming ZhangEmail author
  • Xiaohui Jiang
  • Liangmin YuEmail author


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.

Key words

polyaniline poly (aniline-co-2-ethylaniline) micro/nanostructures corrosion protection wettability 


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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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Copyright information

© Ocean University of China, Science Press and Springer-Verlag GmbH Germany 2019

Authors and Affiliations

  1. 1.Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical EngineeringOcean University of ChinaQingdaoChina
  2. 2.College of Chemical Engineering and Biological TechnologyXingtai UniversityXingtaiChina
  3. 3.Open Studio for Marine Corrosion and ProtectionPilot National Laboratory for Marine Science and Technology (Qingdao)QingdaoChina

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