Assembling Mixed Carboxylic Acid Molecules on Hierarchical Structured Aluminum Substrates for the Fabrication of Superoleophobic Surfaces with Controlled Oil Adhesion. Issue 1 (22nd September 2014)

• Record Type: Journal Article
• Authors: Cheng, Zhongjun; Lai, Hua; Du, Ying; Hou, Rui; Li, Chong; Zhang, Naiqing; Sun, Kening
• Is Part Of: ChemPlusChem. Volume 80:Issue 1(2015:Jan.)
• Page Start: 151
• Page End: 157
• Publication Date: 2014-09-22
• Subjects: aluminum -- carboxylic acids -- nanostructures -- superoleophobic surfaces -- surface chemistry; Chemistry -- Periodicals; 540.5
• DOI: 10.1002/cplu.201402237
• Languages: English
• ISSNs: 2192-6506

Abstract

Abstract: Controlling oil adhesion on the superoleophobic surfaces is very important in both fundamental research and practical applications. Herein, we report a new method through modification of mixed carboxylic acid (CH3 (CH2 )6 COOH and CF3 (CF2 )6 COOH) molecules on hierarchical structured aluminum substrates toward the fabrication of superoleophobic surfaces with tunable adhesion. The oil adhesion can be controlled by changing the concentration of CF3 (CF2 )6 COOH ( x F ) in the modified solution. Detailed research indicates that the tunable effect is ascribed to the combined effect of the surface chemistry variation and the hierarchical structures on the substrates. Furthermore, we also demonstrate an application of our surfaces in a droplet‐based microreactor. The results reported here can not only provide a new idea for fabrication of superoleophobic surfaces with tunable adhesion but can also potentially be used in many applications, such as microfluidic devices and chemical microreactors. Abstract : Like oil and water : Superoleophobic surfaces with tunable adhesion were obtained by assembling mixed carboxylic acid on nanostructured aluminum substrates. The surface adhesion can be controlled by simply controlling the surface chemical composition (see figure).