Preparation of Super-Water-Repellent Alumina Coating Film with High Transparency on Poly(ethylene terephthalate) by the Sol–Gel Method
- 1 August 2000
- journal article
- research article
- Published by Oxford University Press (OUP) in Chemistry Letters
- Vol. 29 (8), 864-865
- https://doi.org/10.1246/cl.2000.864
Abstract
Al2O3 gel films were prepared on poly(ethylene terephthalate) substrates from Al(O–sec-C4H9)3 chemically modified with ethyl acetoacetate. A small roughness of about 20–50 nm was found to form on the Al2O3 gel films dried at room temperature and then immersed in hot water at 60 °C. When hydrolyzed fluoroalkyltrimethoxysilane was coated on the Al2O3 films, transparent thin films with contact angle for water to be more than 150° were obtained.Keywords
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