Control by ATR-FTIR of surface treatment of cork stoppers and its effect on their mechanical performance
| Autor: | M. C. García-Vallejo, Florentino González-Hernández, Rosa Calvo-Haro, Maria J. Caceres-Esteban, José Ramón González-Adrados, José Luis García de Ceca |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2012 |
| Předmět: |
0106 biological sciences
Materials science Cork stopper 010401 analytical chemistry Analytical chemistry Forestry Plant Science 01 natural sciences Industrial and Manufacturing Engineering 0104 chemical sciences Absorbance Ftir spectra chemistry.chemical_compound Silicone chemistry 010608 biotechnology Attenuated total reflection General Materials Science Silvicultura Fourier transform infrared spectroscopy Spectroscopy Agglomerated cork |
| Zdroj: | Repositorio de Resultados de Investigación del INIA Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria INIA Wood Science And Technology, ISSN 0043-7719, 2012, No. 46 INIA: Repositorio de Resultados de Investigación del INIA Archivo Digital UPM Universidad Politécnica de Madrid |
| Popis: | Fourier transform infrared (FTIR) spectroscopy was applied to determine the type of surface treatment and dose used on cork stoppers and to predict the friction between stopper and bottleneck. Agglomerated cork stoppers were finished with two different doses and using two surface treatments P (paraffin and silicone), 15 and 25 mg/stopper, and S (only silicone), 10 and 15 mg/stopper. FTIR spectra were recorded at five points for each stopper by attenuated total reflectance (ATR). Absorbances at 1,010, 2,916, and 2,963 cm -1 were obtained in each spectrum. Discriminant analysis techniques allowed the treatment, and dose applied to each stopper to be identified from the absorbance values. 91.2% success rates were obtained from individual values and 96.0% from the mean values of each stopper. Spectrometric data also allowed treatment homogeneity to be determined on the stopper surface, and a multiple regression model was used to predict the friction index (If = Fe/Fc) (R 2 = 0.93). © 2011 Springer-Verlag. |
| Databáze: | OpenAIRE |
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