各種シリカの表面構造と濡れ特性 ナノからマクロレベルまでの評価

Abstract

Microscopic and macroscopic wettabilities of various silica surfaces loaded with trimethylsilyl groups were studied, focusing on the effect of the surface geometrical structures. The geometrical structures in micro and macro scales were investigated by water vapor adsorption. The microscopic wettability was determined by water vapor adsorption, while the macroscopic wettability was measured by the contact angle. The microscopic wettability affects the continuous two dimensional water layer. The macroscopic wettability influences the capillary condensation and surface roughness. The wettability of surface was essentially governed by the microscopic wettability, which is a primary property of various silica surfaces. The capillary condensation and surface roughness enhance wettability as a secondary effect which results from the primary property.