Journal
COATINGS
Volume 10, Issue 12, Pages -Publisher
MDPI
DOI: 10.3390/coatings10121167
Keywords
superhydrophobic; dual-response; oil– water separation; contact angle
Categories
Funding
- NSF of the Science and Technology Department of Shaanxi Province [2019JM-122]
- Doctoral Research Initiation Fund of Xi'an University of Technology [108-451119007]
- NSF of the Key Laboratory of Shaanxi Provincial Department of Education [15JS075]
- Xi'an Science and technology plan project [GXYD14.27]
- Key scientific research program of Shaanxi Provincial Department of Education [20JY055]
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Although various superhydrophobic materials have been manufactured and effectively used for oil-water separation, it is still highly desirable to explore materials which are eco-friendly, low-cost, and multifunctional. In this paper, a stable copolymer solution was prepared from the fluorine-free superhydrophobic copolymer with dual-responsiveness of temperature and pH. The functional superhydrophobic paper was prepared by immersing paper in copolymer solution by the dip-coating method. The surface element and structure analysis of the prepared superhydrophobic paper shows that the dual-responsive copolymer adheres successfully to the surface of the paper without destroying the fiber structure of the paper. At pH >= 7 and T > 25 degrees C, the paper has a good superhydrophobic performance, while under the conditions of pH < 7 and T < 25 degrees C, the paper comes into a hydrophilic state. Therefore, the dual-responsive superhydrophobic paper is more likely to adapt to the complicated oil-water separation environment than the single-response.
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