Abstract
With the increasing occurrences of industrial oily wastewater emissions and oil spills, considerable efforts have been made to develop superhydrophobic materials for oil–water separation. Herein, we report a facile dipping-UV curing approach to fabricate superhydrophobic organosilicon/silica hybrid coating with crosslinked network structure on cotton fabric via thiol-ene reaction between thiol-functionalized silica nanoparticles (SH-SiO2 NPs) and acryloyloxy-terminated polydimethylsiloxane (A-PDMS-A). With the optimized mass ratio of SH-SiO2 NPs to A-PDMS-A at 0.2, the water contact angle of the fabric reached 155° and the water sliding angle was 8°, exhibiting excellent water repellency. Furthermore, the superhydrophobic cotton fabric possessed self-cleaning ability and good surface stability. In addition, the fabric was successfully applied for effective oil–water separation, and the separation efficiency reached up to 99.06%. Even after 15 cycles, the separation efficiency still maintained 98.93%, demonstrating excellent reusability. Our findings stand out as a new tool to fabricate UV-curable superhydrophobic coating on cotton fabric for efficient oil–water separation.
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Acknowledgments
The work was financially supported by the Science and Technology Planning Project of Guangdong Province, China (2017B090915002, 2018A030313884) and the Science and Technology Planning Project of Guangzhou City, China (201804010381).
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Gao, S., Li, H., Lai, X. et al. UV-curable superhydrophobic organosilicon/silica hybrid coating on cotton fabric for oil–water separation. J Coat Technol Res 17, 1413–1423 (2020). https://doi.org/10.1007/s11998-020-00362-z
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DOI: https://doi.org/10.1007/s11998-020-00362-z