Ordered porous structure hybrid films generated by breath figures for directional water penetration. Issue 107 (19th October 2015)

• Record Type: Journal Article
• Authors: Guo, Tianqi; Han, Keyu; Heng, Liping; Cao, Moyuan; Jiang, Lei
• Is Part Of: RSC advances. Volume 5:Issue 107(2015)
• Page Start: 88471
• Page End: 88476
• Publication Date: 2015-10-19
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c5ra13627j
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : A highly ordered open-pore hybrid film was fabricated by controlling the substrate roughness and wettability. The composite with different wettability on the two side resulted in an attractive unidirectional water-penetration function (see figure). Abstract : A highly ordered open pore honeycomb-structured hybrid film was fabricated by controlling substrate roughness and wettability with the breath figure (BF) method. This composite consists of a porous hydrophobic polyimide (PI) film and a hydrophilic anodic aluminum oxide (AAO) film. The difference between hydrophilic-hydrophobic surfaces yielded an attractive directional water-penetration function. These findings may lead to new applications for honeycomb-structured composites with directional water functionality in fields such as directional drug delivery, biosensors and molecular filtration.