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Monday, 17 February 2020
Raw materials & technologies, Science today - coatings tomorrow

Chinese researchers study fabrication of superhydrophobic and superparamagnetic coatings

Tuesday, 27 November 2012

Superhydrophobic and superparamagnetic magnetite/silica coatings were fabricated and their properties analyzed. The coatings had good superhydrophobic property in the pH range from 2 to 12.

Chinese researchers studied superhydrophobic coatings

Chinese researchers studied superhydrophobic coatings

Youhaua Fan and colleagues from Central South University Hunan Changsha in China prepare superhydrophobic and superparamagnetic magnetite/silica composite by combining of the organic and inorganic materials in the present work. The resulting products were characterized by means of X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transfer infrared spectrometer (FTIR), Thermal Gravity Analysis (TG) and water contact angle measurement (CA), respectively. The morphologies of the composite were spherical particles with diameters from 40 to 80 nm seen from SEM. The results from FTIR and TG indicated that 2,2,3,4,4,4-hexafluorobutyl acrylate (HFBA) had grafted onto vinyl-terminated Fe3O4 nanoparticles via covalent bonds. Surface wetting properties of the P (HFBA)-g-Fe3O4@MPS nanoparticles were evaluated by measuring water contact angle, which were measured to be 154.6°. Moreover, based on the magnetism analysis of the resulting products, they had superparamagnetic property. The double functional repairable coatings enlarged potential applications of the superhydrophobic surfaces. This study has been published in Surface and Coatings Technology, Volume 213, December 2012, pages 8-14. (

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