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    Facile fabrication of a lotus-effect composite coating via wrapping silica with polyurethane

    Year: 2010

    Journal: Applied Surface Science, Volume 256, Issue 7, 15 January 2010, Pages 2122-2127, 20111221

    Authors: Changhong Su

    Organizations: Department of Material Science, School of Material Science and Engineering, Shandong University of Technology, Zhangzou Road 22, Zibo 255049, China

    A lotus-effect coating was fabricated by wrapping micro-silica and nano-silica with polyurethane (PU) and subsequent spraying. The coating shows the similar self-cleaning property as lotus leaves: the contact angle is as large as 168° and the sliding angle is as low as 0.5°. Surface morphology of the coating was studied with scanning electron microscopy and atomic force microscopy. The composite coating shows the similar structure as lotus leaves.