| Summary: | 碩士 === 國立中央大學 === 光電科學與工程學系 === 106 === In recent years, there is a kind of extreme wetting behavior on the surface of hydrophilic coating, which is the super hydrophilic surface. When the water droplets are attached to a super-hydrophilic surface, the water contact angle will be less than 10 degrees. It is helpful to make the water droplets spread quickly and achieve the excellent properties of fast drying and mist removal.
The aim of this study is to characterize the Super-Hydrophilic Polymer Films on Polycarbonate Substrate. First using oxygen and argon plasma to etch surface with roughness, and then using organic silane as the monomer for plasma polymerization .Finally hydrophilic free radicals deposited on the substrate. By adjusting the etching parameters, such as plasma current, voltage and deposition time, etc., making the surface extremely rough. The more rough the surface, the more hydrophilic functional on the surface, which can promote the persistence of super hydrophilic. In the preparation process, using optical emission spectrometer as a real-time monitoring of the plasma dissociation, so that the monomer has a higher probability of polymerize hydrophilic free radicals. The content of the constituent elements of the plasma polymerization film is analyzed by XPS, the hydrophilic functional has the most content, so the water contact angle is less than 10 degrees and achieves the super hydrophilic effect.
In terms of durability, the super hydrophilic durability of the injection molded PC substrate can be up to 34 days. The compression molding PC substrate can be up to 39 days.
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