A simple method for the preparation of superhydrophobic PVDF–HMFS hybrid composite coatings

Basu, Bharathibai J and Ashok Kumar, Paranthaman (2009) A simple method for the preparation of superhydrophobic PVDF–HMFS hybrid composite coatings. Applied Surface Science, 255 (8). pp. 4479-4483. ISSN 0042-207X

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A superhydrophobic surface was obtained by embedding hydrophobically modified fumed silica (HMFS) particles in polyvinylidene fluoride (PVDF) matrix. The water contact angle (WCA) on the PVDF–HMFS hybrid composite coating is influenced by the content and nature of silica particles in the coating. As the silica concentration in PVDF matrix was increased from 33.3% to 71.4%, WCA increased from 1178 to 1688 and the sliding angle decreased from 908 to <18. Surface topography of the coating was examined using scanning electron microscopy. An irregular rough surface structure composed of microcavities and nanofilaments was found to be responsible for the superhydrophobicity. Themethod is simple and costeffective and can be used for preparing self-cleaning superhydrophobic coating on large areas of different substrates.

Item Type: Article
Uncontrolled Keywords: Superhydrophobic Polyvinylidene fluoride PVDF Coatings Hydrophobically modified fumed silica Water contact angle
Subjects: CHEMISTRY AND MATERIALS > Chemistry and Materials (General)
Depositing User: Ms Indrani V
Date Deposited: 05 Aug 2011 05:20
Last Modified: 05 Aug 2011 05:20
URI: http://nal-ir.nal.res.in/id/eprint/9791

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