Wetting induced by repulsive particles, porous membranes and metal coated spheres
FacultiesFakultät für Naturwissenschaften
LicenseStandard (Fassung vom 03.05.2003)
Mixing an organic liquid with suitable colloids makes possible to achieve the complete wetting of the water, but only if the particles are enough to form a close packed monolayer on the water surface. Using magnetic repulsive particles it is possible to induce the wetting of the water surface even at a particle density less than the close packed monolayer. In the absence of the field, the particles form clusters inside lenses of the liquid while, for some values of field strength, the particles became repulsive and induce the wetting. By solidification of these mixed layers and the subsequent dissolution of the embedded particles thin 2-dimensional porous membranes were obtained. Uniform core-shell microspheres composed of a PMMA core and a thin metallic shell of various metal alloys can be prepared by dispersion polymerization and electroless plating.
Subject HeadingsBenetzung [GND]
Membranes: Technology [LCSH]
Porous materials [LCSH]