Corrosion resistant and adsorbent plasma polymerized thin film
| Autor: | M.L.P. da Silva, Rodrigo Amorim Motta Carvalho, Roberto da Rocha Lima, Leonardo Frois Hernandez, A.T. Carvalho |
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| Rok vydání: | 2009 |
| Předmět: |
Materials science
Aqueous solution Metals and Alloys Analytical chemistry Infrared spectroscopy Ether Quartz crystal microbalance Condensed Matter Physics Plasma polymerization Surfaces Coatings and Films Electronic Optical and Magnetic Materials Contact angle chemistry.chemical_compound Adsorption chemistry Chemical engineering Materials Chemistry Electrical and Electronic Engineering Thin film Instrumentation |
| Zdroj: | Sensors and Actuators B: Chemical. 141:349-360 |
| ISSN: | 0925-4005 |
| DOI: | 10.1016/j.snb.2009.07.003 |
| Popis: | Adsorbent and corrosion resistant films are useful for sensor development. Therefore, the aim of this work is the production and characterization of plasma polymerized fluorinated organic ether thin films for sensor development. The polymerized reactant was methyl nonafluoro(iso)butyl ether. Infrared Spectroscopy showed fluorinated species and eventually CO but CH n is a minor species. Contact angle measurements indicated that the film is hydrophobic and organophilic but oleophobic. Optical microscopy reveals not only a good adherence on metals and acrylic but also resistance for organic solvents, acid and basic aqueous solution exposure. Double layer and intermixing are possible and might lead to island formation. Quartz Crystal Microbalance showed that 2-propanol permeates the film but there is no sensitivity to n-hexane. The microreactor manufactured using a 73 cm long microchannel can retain approximately 9 × 10 −4 g/cm 2 of 2-propanol in vapor phase. Therefore, the film is a good candidate for preconcentration of volatile organic compounds even in corrosive environment. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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