Superhydrophobicity via organophosphonic acid derivatised aluminium films

摘要

Organophosphonic acid derivatisation on aluminium surfaces had been demonstrated to be effective for surface energy control. By following the surface energy control strategy, surperhydrophobic Al surfaces had been achieved via microcolumn pattern and dodecylphosphonic acid (DDPA) derivatisation. The water contact and sliding angles of the superhydrophobic Al surfaces were respectively 156 and 5 degrees. Measurements confirmed that the linkage between DDPA and Al are mainly bidentate P-O-Al. The wetting properties as well as the mechanical durability of the superhydrophobic Al surfaces were tested and discussed.