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    Durable superoleophobic-superhydrophilic fabrics with high anti-oil-fouling property

    Year: 2018

    Journal: RSC Adv., Volume 8, page 26939–26947

    Authors: Zhou, Hua; Wang, Hongxia; Yang, Weidong; Niu, Haitao; Wei, Xin; Fu, Sida; Liu, Shuai; Shao, Hao; Lin, Tong

    Organizations: Australian Research Council (ARC) [ARC DP150100406]; Alfred Deakin Postdoctoral Fellowship

    Although a number of methods have been reported for the preparation of superoleophobic-superhydrophobic surfaces, a challenge still remains in preparing a surface showing simultaneous superoleophobicity and superhydrophilicity. Herein, we demonstrate a novel strategy for preparing a simultaneously superhydrophilic-superoleophobic surface on cotton fabrics. A wet chemical coating method was employed to apply an oligomer which consists of a fluorinated alkyl and a PEG-phosphate hydrophilic moiety, silica nanoparticles and fluoroalkyl silane, onto fabric substrates. The treated fabrics exhibited both superoleophobicity and superhydrophilicity with a contact angle over 150 degrees for oil fluids (surface tension > 27 mN m(-1)) but 0 degrees for water. Water can spread into the fabric matrix within 2 seconds. The superhydrophilic-superoleophobic fabric had excellent superoleophobicity no matter whether it was at the dry state in air, pre-wetted with water, or in underwater conditions. When being contaminated forcedly with oil or oil-free dirt, the fabric can be easily cleaned up with water without using any detergent and chemical agent. Superoleophobic-superhydrophilic surfaces may provide an alternative and feasible way for anti-fouling applications.
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