Abstract
Superhydrophobic cellulose and chitosan composite aerogel (SCECS) is fabricated through a novel and simple approach for the first time. During the preparation of cellulose and chitosan composite aerogel (CECS), chitosan is selfassemble into number micron-diameter particles on the surface of aerogel, which is similar to the micromorphology of a lotus leaf. Based on the rough surface, CECS is modified by sodium stearate through electrostatic interaction and ion exchange. Water contact angles of 156° are obtained for superhydrophobic aerogel. SCECS can remove various oils from water and with absorption capacities of 10 g/g for oil. Furthermore, the special structure of a non-porous of surface and porous layer of internal is benefit to separate surfactant-stabilized water-in-oil emulsions under gravity.
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Meng, G., Peng, H., Wu, J. et al. Fabrication of superhydrophobic cellulose/chitosan composite aerogel for oil/water separation. Fibers Polym 18, 706–712 (2017). https://doi.org/10.1007/s12221-017-1099-4
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DOI: https://doi.org/10.1007/s12221-017-1099-4