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    Oil/water interfaces of guar gum-based biopolymer hydrogels and application to their separation

    Year: 2017

    Journal: Carbohydr. Polym., Volume 169, AUG 1, page 9–15

    Authors: Dai, Lei; Wang, Baobin; An, Xingye; Zhang, Liqiang; Khan, Avik; Ni, Yonghao

    Organizations: Canada Research Chairs Program

    Keywords: Guar gum; Hydrogel; Biopolymer; Oil/water interface; Separation

    Oily wastewater treatment has become a significant research subject due to potential environmental related applications, e.g., oil spill remedy process. In this paper, a natural polymer based hydrogel, prepared from guar gum (GG) and metaborate, was coated onto a stainless steel mesh, and the as-prepared hydrogel-coated material was applied for oil/water separation. The strong hydrophilic GG hydrogel imparted excellent underwater oleophobicity and ultra-low oil adhesion. The results proved that the as-prepared GG hydrogel-coated material possessed excellent self-cleaning property and high oil/water separation efficiency (C) 2017 Elsevier Ltd. All rights reserved.
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