超疏水表面之製備及其學理研究

Abstract

本篇論文有兩個主題，其一為超疏水表面的研究，其二為利用超疏水平臺製造出由不同高分子所組成的超疏水表面。 欲達到超疏水表面須在表面上由極細緻的粗糙度及本身具疏水性質的高分子組成，因此本研究使用BA-m Polybenzoxazine及奈米粒子以雙層薄膜的方式製造超疏水表面，又因為BA-m Polybenzoxazine是熱固性高分子，具有高Tg，因此經高溫處理後及各種溶劑處理後的表面仍保有超疏水性質；而此超疏水性質不單單對於純水，對於酸性及鹼性的液體也仍有超疏水性質。 第二個主題是延續第一個主題的方法，將第二層BA-m Polybenzoxazine薄膜以PS、PCL、PVPh、PVA及P4VP取代以製造超疏水表面，其中PCL、PVPh、PVA及P4VP為親水性分子，而以此過程處理後的高分子表面也都具有超疏水性質。

This study is to fabricate superhydrophobic surfaces by using BA-m Polybenzoxazine and some hydrophilic polymers. Superhydrophobic surface requires a water-repellent material and a high surface roughness. Therefore we designed a rough surface composed of BA-m Polybenzoxazine and SiO2 nanoparticles, and then we covered it with BA-m Polybenzoxazine. The outer surface of these double coatings shows superhydrophobicity, thermal-stability and solvent-resistance. And this surface is superhydrophobic for not only pure water but also corrosive liquids, such as acidic and basic solutions. Then we covered PS, PCL, PVPh, PVA and P4VP on the rough surfaces. Among these five polymers, PCL, PVPh, PVA and P4VP are hydrophilic polymers. To our surprise, all of them turned into superhydrophobic surfaces. According to these excellent results, they are worthy to apply to various fields.