SUPERHYDROPHILIC FILTER STRUCTURE FOR SELECTIVELY SEPARATING WATER AND OIL

摘要

Provided is a filter structure for effectively separating water and oil using wettability properties. The filter structure comprises: a first filter layer having a plurality of openings; a second filter layer having a plurality of openings and overlapping the first filter layer while being spaced apart from the first filter layer; and a hydrophilic polymer layer formed at the surfaces of the first filter layer and second filter layer. The surfaces of the first filter layer and second filter layer have a convex-concave structure of a dual scale obtained by combining a micro scale and a nano scale. The hydrophilic polymer layer is formed along the curve of the concavo-convex structure.