Durable superoleophobic–superhydrophilic fabrics with high anti-oil-fouling property. Issue 47 (30th July 2018)

• Record Type: Journal Article
• Authors: Zhou, Hua; Wang, Hongxia; Yang, Weidong; Niu, Haitao; Wei, Xin; Fu, Sida; Liu, Shuai; Shao, Hao; Lin, Tong
• Is Part Of: RSC advances. Volume 8:Issue 47(2018)
• Page Start: 26939
• Page End: 26947
• Publication Date: 2018-07-30
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c8ra04645j
• Languages: English
• ISSNs: 2046-2069

Abstract

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. 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.