Preparation of a high hydrophobic aluminium surface by double zincating process. Issue 10 (19th May 2017)

• Record Type: Journal Article
• Authors: Paluvai, Nagarjuna Reddy; Hafeez, Hassan; Han, Dong-Ho; Ryu, Heon-Yul; Lee, Choon-Soo; Park, Jin-Goo
• Is Part Of: Journal of adhesion science and technology. Volume 31:Issue 10(2017)
• Page Start: 1061
• Page End: 1074
• Publication Date: 2017-05-19
• Subjects: Double zincating -- High hydrophobicity -- Self-assembled monolayers; Adhesion -- Periodicals; Adhesives -- Periodicals; 668.3
• DOI: 10.1080/01694243.2016.1244035
• Languages: English
• ISSNs: 0169-4243

Abstract

Abstract: In this present study, an efficient method has been proposed to develop a high hydrophobic zincated coating on the eva-core aluminium (Al) alloy surface. The double zincating method (Z2) was utilized to develop the required roughness on the Al surface. To control the surface energy, lauric acid (LA) was coated on the surface using the liquid self-assembled monolayers (L-SAMs) method. Surface morphology, the chemical composition of the treated and untreated Al alloy has been studied using scanning electron microscopy (SEM), atomic force microscopy (AFM), optical microscopy and X-ray diffraction (XRD), respectively. The hydrophobicity of the substrates has also been analysed using a contact angle measurement (CA). AFM micrographs show the surface roughness of the Al alloy has been drastically increased with chemical treatments from 0.071 to 0.32 μm. XRD shows the percentage crystallinity of the Al alloy is decreased with double zincating and LA coating from 56.8 to 22.7%. As a result, a high hydrophobicity of Al alloy was induced with a contact angle of 150° upon the double zincating method and L-SAMs coating.