Underwater oil wettability on nanostructured superamphiphobic surface tuned by trapped air layer continuity

Abstract

When the superamphiphobic meshes are immersed in water, the rough structures on steel wires are filled with air. The nanostructured superamphiphobic surfaces were prepared on the stainless-steel mesh. By adjusting the mesh size of the surface, the continuity of trapped air layer on the superamphiphobic surface underwater could be controlled. Then the underwater oil-wetting behavior on the prepared superamphiphobic mesh was investigated. The oil droplet spread out on the superamphiphobic surface without mesh and exhibited an oil contact angle of about 0° under water. But the oil contact angle formed on the superamphiphobic mesh surfaces and extended with increasing mesh size. We thought the discontinuity of trapped air layer on the surface and the entry of water into interval between the steel wires should be responsible for these behaviors.

Keywords

Underwater / Wettability / Superamphiphobic / Air layer

References

[1] Sun T, Feng L, Gao X, Jiang L. Acc. Chem. Res., 2005, 38: 644.

[2] Guo H, Jia H, Zeng J, Cong Q, Ren L. Chem. Res. Chinese Universityies, 2013, 29(2): 333.

[3] Dai C, Gao C, Feng L. Chem. J. Chinese Universities, 2013, 34(9): 2057.

[4] Barthlott W, Neinhuis C. Planta, 1997, 202: 1.

[5] Liu M, Wang S, Wei Z, Song Y, Jiang L. Adv. Mater., 2009, 21: 665.

[6] Wong T S, Kang S H, Tang S K Y, Smythe E J, Hantton B D, Grinthal A, Aizenberg J. Nature, 2011, 477: 443.

[7] Xue Z, Jiang L. Acta Polym. Sin., 2012, 10: 1091.

[8] Mamur A. Biofouling, 2006, 22: 107.

[9] Sun T, Tan H, Fu Q, Jiang L. Small, 2005, 1: 959.

[10] Chen L, Liu M, Bai H, Chen P, Xia F, Han D, Jiang L. J. Am. Chem. Soc., 2009, 131: 10467.

[11] McHale G, Newton M I, Shirtcliffe N J. Soft Matter, 2010, 6: 714.

[12] Lee C, Kim C J. Phys. Rev. Lett., 2011, 106: 014502.

[13] Xue Z, Wang S, Lin L, Chen L, Liu M, Feng L, Jiang L. Adv. Mater., 2011, 23: 4270.

[14] Ding C, Zhu Y, Liu M, Feng L, Wan M, Jiang L. Soft Matter, 2012, 8: 9064.

[15] Wang C F, Tzeng F S, Chen H G, Chang C J. Langmuir, 2012, 28: 10015.

[16] Mamur A. Langmuir, 2006, 22: 1400.

[17] Sheng X L, Zhang J H. Physicochem. Eng. Aspects., 2011, 377: 374.

[18] Bobji M S, Vijay K S, Asthana A, Govardhan R N. Langmuir, 2009, 25: 12120.

[19] Poetes R, Holtzmann K, Franze K, Steiner U. Phys. Rev. Lett., 2010, 105: 166104.

[20] Barthlott W, Schimmel T, Wiersch S, Koch K, Brede M, Barczewski M, Walheim S, Weis A, Kaltenmaier A, Leder A, Bohn H F. Adv. Mater., 2010, 22: 2325.

[21] Jin M, Wang J, Yao X, Liao M, Zhao Y, Jiang L. Adv. Mater., 2011, 23: 2891.

[22] Jin M, Li S, Wang J, Xue Z, Liao M, Wang S. Chem. Commun., 2012, 48: 11745.

[23] Jin M, Wang J, Hao Y, Liao M, Zhao Y. Polym. Chem., 2011, 2: 1658.

[24] Jung Y C, Bhushan B. Langmuir, 2009, 25: 14165.