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Congratulations to Xia Li(李霞) et. al. for new publication in Surface Engineering!
发布时间:2021-03-01

A stable super-amphiphilic surface created from superhydrophobic silica/epoxy coating by low-temperature plasma-treatment



https://www.tandfonline.com/eprint/S5DQN7J3FY3QISIZCVWB/full?target=10.1080/02670844.2021.1888214 (full avaible to 20.4.2021)


A silica/epoxy hydrophobic coating (water contact angel (WCA) = 130°) was prepared on a glass substrate and further treated in a low-temperature plasma (PL) condition, which surprisingly resulted in an amphiphilic surface (best WCA = 3.5°, best oil CA = 5°) with excellent surface stability and without decay along with the time. We systematically studied the influences of two working gases (O2, Ar) and the working time of PL-treatment on the wetting behaviour (for both water and oil) and the aging effects of the PL-treated silica/epoxy coating, using SEM, FTIR-ATR, XPS and metallographic microscope. The results suggested that the stable super-amphiphilic change, causing by O2 or Ar low-temperature PL-treatment, can be attributed to a physical smoother surface (bombed by PL-treatment) and the surface chemical state change (more polar groups, OH/NH2).