期刊
SOFT MATTER
卷 17, 期 27, 页码 6542-6551出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d1sm00647a
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类别
资金
- National Natural Science Foundation of China [21774098]
- 111 project [B18038]
- Opening Project of State Key Laboratory of Polymer Materials Engineering (Sichuan University) [sklpme2019-4-26]
The study successfully prepared a superhydrophobic fabric with excellent performance in resisting solvent immersion, UV irradiation, and tensile stress, demonstrating strong adhesion strength, self-cleaning, and contamination resistance. Additionally, the fabric achieved efficient oil-water separation even after multiple cycles.
In this work, we prepare a PDMS-SiO2-PDA@fabric with high water contact angle (WCA = 155 degrees). Combining dopamine self-polymerization and a sol-gel method, SiO2 is in situ grown on a PDA-modified fabric surface to synergistically construct micro-nano rough structures. Finally, a superhydrophobic fabric is successfully obtained after coating the fabric with a layer of PDMS. The prepared fabric can maintain superhydrophobicity after immersion in various solvents (pH = 1, 3, 5, 7, 9, 11, 13, DMF, ethanol, THF, n-hexane) for 24 h and strong ultraviolet irradiation for 60 min. Thanks to the highly reactive PDA clusters, the stronger interfacial bond between the fabric and SiO2 enables it to withstand 180 min of washing and 159.22 N tensile stress, showing strong adhesion strength. In addition, the modified fabric has excellent self-cleaning properties and is resistant to contamination such as milk, coffee and tea. More importantly, the prepared fabric can selectively repel water and adsorb oil, achieving above 90% oil-water separation efficiency even after 8 cycles.
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