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Pubmed for Handhelds

PUBMED FOR HANDHELDS

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  • Title: Durable superoleophobic-superhydrophilic fabrics with high anti-oil-fouling property.
    Author: Zhou H, Wang H, Yang W, Niu H, Wei X, Fu S, Liu S, Shao H, Lin T.
    Journal: RSC Adv; 2018 Jul 24; 8(47):26939-26947. PubMed ID: 35541050.
    Abstract:
    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° for oil fluids (surface tension > 27 mN m-1) but 0° 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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