Aerosol assisted deposition of melamine-formaldehyde resin: Hydrophobic thin films from a hydrophilic material

被引：16

作者：

Crick, Colin R. ^{[1
]}

Parkin, Ivan P. ^{[1
]}

机构：

[1] UCL, Dept Chem, Mat Chem Res Ctr, London WC1H OAJ, England

来源：

THIN SOLID FILMS | 2011年 / 519卷 / 07期

基金：

英国工程与自然科学研究理事会;

关键词：

Hydrophobic; Hydrophilic; Chemical vapour deposition; Melamine; Wetting; CHEMICAL-VAPOR-DEPOSITION; TUNGSTEN-OXIDE; SUPERHYDROPHOBIC SURFACES; ROUTES; COATINGS; POLYMER; STATE; LANTHANIDE; PHOSPHIDES; COMPLEXES;

D O I：

10.1016/j.tsf.2010.10.062

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

An intrinsically hydrophilic melamine-formaldehyde thin film (water contact angle of 34 degrees for a cast flat surface) was deposited on a glass substrate using aerosol assisted chemical vapour deposition. The resultant resin films showed a highly developed microstructure consisting of spherical structures that were agglomerated into towers. The surface wetted via a Cassie-Baxter mechanism with air trapped underneath the water droplets and resultant water contact angles as high as 135 degrees. Film thickness and coverage were crucial in determining the wetting properties. Films with limited deposition gave hydrophilic results, whereas thicker films greater than 4 mu m were superhydrophilic. This behaviour could be explained by the ease of trapping air under the coating. It is shown that the water wetting properties of a single material can be altered from superhydrophilic to near superhydrophobic by controlling the surface microstructure in a single-step aerosol route. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：2181 / 2186

页数：6

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