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Free radical copolymerization of trifluoroethyl methacrylate with perfluoroalkyl ethyl acrylates for superhydrophobic coating application

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Abstract

The chemical constitution is a critical factor to the surface properties and the applications of polymers. In this paper, the random copolymers of trifluoroethyl methacrylate (FMA) and perfluoroalkyl ethyl acrylate (TEAc-8) with different feed molar ratios were synthesized by radical solution polymerization. The chemical structures of copolymers [poly(FMA-co-TEAc-8)] were characterized by FTIR, 1H NMR and 19F NMR. Thermogravimetric analysis and differential scanning calorimetry were performed to analyze thermal properties of copolymer. These copolymers demonstrated good thermal stability and lower glass transition temperature (Tg) by introducing the flexible perfluoroalkyl ethyl acrylate with long side chain. At the same time, the surface hydrophobicity of the prepared copolymer coatings was significantly improved, and the water contact angles could be raised to 117° when the molar ratios of TEAc-8 increased to 80%. Furthermore, superhydrophobic coatings were fabricated simply based on organic/inorganic hybrid. The water contact angle and the contact angle hysteresis of the composite coatings higher than 150° and lower than 5°, respectively, were achieved with blending of 2 wt% nano-silica. These superhydrophobic hybrid coatings have superb potential for large-scale and practical applications in self-cleaning and corrosion prevention owing to their simplicity in preparation.

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Acknowledgements

Authors gratefully acknowledge the financial support from the National Science Foundation of China (21704033), Major Program of Shandong Province Natural Science Foundation (ZR2017ZC0529) and Key Research Program of Shandong Province (2018GGX102002).

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Authors and Affiliations

  1. Shandong Provincial Key Laboratory of Fluorine Chemistry and Chemical Materials, School of Chemistry and Chemical Engineering, Shandong Engineering Research Center for Fluorinated Material, University of Jinan, Jinan, 250022, China

    Mei Hu, Yabin Zhang, Umair Azhar, Luqing Zhang, Zizhao Chen, Shuxiang Zhang & Chuanyong Zong

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  1. Mei Hu
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Correspondence to Shuxiang Zhang or Chuanyong Zong.

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Hu, M., Zhang, Y., Azhar, U. et al. Free radical copolymerization of trifluoroethyl methacrylate with perfluoroalkyl ethyl acrylates for superhydrophobic coating application. J Coat Technol Res 16, 711–719 (2019). https://doi.org/10.1007/s11998-018-00160-8

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