pps proceeding - Abstract Preview
pps proceeding
Symposium: S20 - Microtribology and Surface Analysis
Oral Presentation
 
 

Direct Breath Figure Formation on PMMA and Superhydrophobic Surface Using In Situ Perfluoro Modified Silica Nanoparticles

Farbod Farnaz (1)*, Pourabbas Behzad (1)

(1) Sahand University of technology - Tabriz - Iran

Breath figure formation was carried out directly on the surface of poly (methylmethacrylate) using a mixture of a good solvent, tetrahydrofuran and a non-solvent, water. Direct breath figure formation was coined for this method and a mechanism was proposed to describe the figure formation by the method based on hypothesizes available for the normal breath figure formation. The proposed mechanism is such that the sonication effect, immersion time and water content on characteristics of the obtained figures can be explained. The figured surface was then made superhydrophobic with a water contact angle of 175 ̊ using in situ growing of perfluoro modified silica nanoparticles inside the figure cell by one-pot method. The spherical modified silica nanoparticles were detected being trapped by figure features providing a mechanical entrapment of the low surface energy nanoparticles.