Preparation of superhydrophobic surfaces by cauliflower-like polyaniline

Authors

  • Jin-Feng Cui,

    1. Department of Chemical Engineering, College of Petrochemical Engineering, Lanzhou University of Technology, Lanzhou, People's Republic of China
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  • Xue-Mei Bao,

    1. Department of Chemical Engineering, College of Petrochemical Engineering, Lanzhou University of Technology, Lanzhou, People's Republic of China
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  • Han-Xue Sun,

    1. Department of Chemical Engineering, College of Petrochemical Engineering, Lanzhou University of Technology, Lanzhou, People's Republic of China
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  • Jin An,

    1. Department of Chemical Engineering, College of Petrochemical Engineering, Lanzhou University of Technology, Lanzhou, People's Republic of China
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  • Jun-Hong Guo,

    1. Department of Chemical Engineering, College of Petrochemical Engineering, Lanzhou University of Technology, Lanzhou, People's Republic of China
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  • Bao-Ping Yang,

    1. Department of Chemical Engineering, College of Petrochemical Engineering, Lanzhou University of Technology, Lanzhou, People's Republic of China
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  • An Li

    Corresponding author
    1. Department of Chemical Engineering, College of Petrochemical Engineering, Lanzhou University of Technology, Lanzhou, People's Republic of China
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ABSTRACT

Cauliflower-like polyaniline (PANI) was successfully prepared using an interfacial polymerization method. By modification with polydimethylsiloxane (PDMS) using chemical vapor deposition method, the surface wettability of cauliflower-like PANI can be tailored to be superhydrophobic with a water contact angle of 160.4°. The deposition of the low-surface-energy silicon coating originated from PDMS pyrolysis on the cauliflower-like PANI was confirmed by X-ray photoelectron spectroscopy and Fourier Transform Infrared Spectroscopy. The changes in thermal stability and conductivity of the as-prepared PANI before and after PDMS treatment were also investigated by thermogravimetric analysis and using a four-probe method. Compared with nanofiber-shaped PANI by electrodepositing polymerization, the PDMS-treated cauliflower-like PANI has superior surface wettability. Our study may open a new way for fabrication of superhydrophobic surfaces by developing novel nanostructured PANI. © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014, 131, 39767.

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