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Asymmetric wetting Janus fabrics with double-woven structure for oil/water separation

  • Polymers
  • Published:
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Abstract

The asymmetric wetting Janus fabric with double-woven structure was designed by using two systems of warp yarns and two types of the weft yarns with distinct wettability. The result shows that the fabric with double-woven structure possesses the asymmetric wettability with superhydrophobicity on one side while superhydrophilicity on the other side. This asymmetric wettability realizes a unidirectional permeation and oil/water separation effect. The efficiency of oil/water separation could be simply controlled by varying fabric densities; thus, suitable density should be regarded as an important factor in this system. In “water removal” mode, the separation efficiency and separation flux reached 99% and 2.5 L m−2 s−1, respectively. In “de-oiling” mode, the separation efficiency and separation flux reached 96% and 8 L m−2 s−1, respectively. According to this work, the as-prepared asymmetric wettability Janus fabric with double-woven structure is promisingly applied to oil/water separation and other related applications.

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Acknowledgements

The work was supported by a Grant from the National Key R&D Program of China (2017YFB0309400), (2017YFB0309100).

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Authors and Affiliations

  1. Key Lab of Science and Technology of Eco-textile, Ministry of Education, College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai, 201620, China

    Chengjian Yao, Meiyin Luo, Helan Wang, Bi Xu & Zaisheng Cai

  2. China National Inspection and Testing Centre for Ophthalmic Optic Glass and Enamel Products, Shanghai, 201620, China

    Helan Wang

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  1. Chengjian Yao
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  2. Meiyin Luo
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  4. Bi Xu
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Correspondence to Zaisheng Cai.

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Yao, C., Luo, M., Wang, H. et al. Asymmetric wetting Janus fabrics with double-woven structure for oil/water separation. J Mater Sci 54, 5942–5951 (2019). https://doi.org/10.1007/s10853-018-03241-6

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  • DOI: https://doi.org/10.1007/s10853-018-03241-6

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