| Summary: | 碩士 === 國立成功大學 === 化學工程學系 === 102 === This work aims at developing biomimics. Surfaces with superhydrophobicity from lotus leaf, hydrophobicity with high adhesion from rose petal and slippery from nepenthes’ peristome were fabricated. In order to achieve hydrophobicity, Teflon nanoparticle was chosen as material, and roughness was created by sacrificial particle, PSDVB. Liquid film was fabricated by infusing lubricating liquid, fomblin® Y, which has extremely low surface tension. A series of biomimic surfaces were developed.
The results showed films with tunable adhesion can be created by adding different ratio of sacrificial particle. Teflon film and rough Teflon films at low ratio of sacrificial particle are hydrophobic and high adhesive surfaces; rough Teflon films at middle ratio of sacrificial particle are hydrophobic and middle adhesive surfaces; rough Teflon films at high ratio of sacrificial particle are superhydrophobic surfaces. The slippery surface can be fabricated by infusing fomblin® Y into superhydrophobic Teflon surface. Test liquids with surface tension from 18.6 to 72.8 mN/m can slip easily from slippery film, which has omniphobicity and slippery property. In persistence test for time and resistance test for shear force, the slippery property of slippery film can be kept. In this work, slippery film also applied in solving needle climbing phenomenon. Lower surface tension liquids climbing on needle surface can be inhibited by omniphobicity of slippery film.
|
|---|
