Abstract
The preparation of thin films of chitosan–silane hybrid materials by combining sol–gel processing and spin coating is reported. A variety of silanes can be used as starting materials for the preparation of such thin films, namely tetraethoxysilane, tri-tert-butoxysilanol, trimethylethoxysilane, p-trifluoromethyltetra-fluorophenyltriethoxysilane, trivinylmethoxysilane, (methoxymethyl)trimethyl-silane, and hexamethoxydisilane. These silanes are subjected to a sol–gel process before they are added to acidic chitosan solutions. The chitosan:silane ratio is kept constant at 6:1 (w/w) and dilutions with ethanol are prepared and spin coated. Depending on the degree of dilution, film thickness can be controlled in a range between 5 and 70 nm. For the determination of additional surface properties, static water contact angle measurements and atomic force microscopy have been employed.
Originalsprache | englisch |
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Seiten (von - bis) | 285-290 |
Fachzeitschrift | Carbohydrate Polymers |
Jahrgang | 93 |
Ausgabenummer | 1 |
DOIs | |
Publikationsstatus | Veröffentlicht - 2013 |
Fields of Expertise
- Sustainable Systems
Treatment code (Nähere Zuordnung)
- Basic - Fundamental (Grundlagenforschung)
- Application