마이크로/나노 개질된 금속표면 위에서의 방오성능 연구

Abstract

In this work, we investigated the anti-fouling behaviors of titanium surface by varying the wetting morphology. We nanostructured titanium/stainless steel surfaces by applying hot alkali solution and HCl, which turned the surfaces into superhydrophilic. Then a silane was vapor-deposition on the surface to induce superhydrophobicity. Using the fluorescence image analysis, anti-fouling performance were extracted from the samples with different wetting morphologies, and their anti-fouling performance was quantitatively compared with that of untreated sample. The results show that investigated superhydrphilic surface can improve the anti-fouling performance in initial time (Ti~12h, SUS~24h). When the superhydrophobicity was induced after the silane treatment, the sample showed that increase in the anti-fouling performance of 48~72h. When the oil was infused on superhydrophobic surface, the sample showed increase in the anti-fouling performance in 8~72h. Our work provides the strategies to increase anti-fouling and will help develop titanium/stainless steel surfaces operating at various environment.