Abstract
The preparation of superhydrophobic porous materials using 3D printing technology has attracted extensive attention in numerous fields. Herein, a magnetically active PDMS/cobalt powder (PDMS/Co) porous membrane with superwettability was prepared by direct ink writing (DIW) 3D printing. The structural parameters of the porous membrane with different Co powder contents were adjusted by controlling printing parameters, such as printing speed, air pressure and filament spacing, and the variation range of the structural parameters enabling the porous membranes exhibit superhydrophobic properties was finally determined. Owing to the magnetic activity of the Co powder, remotely directional collection of floating oil in water was achieved by manipulating a permanent magnet. In addition, the chemical stability and mechanical stability of the porous membrane were investigated. The method presented here is expected to be applied to remote control of oil adsorption, providing a new strategy for solving the pollution problem caused by oily wastewater.
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