[article]
| Titre : |
A comparison of Indonesian and Indian shellacs using specular reflectance spectroscopy |
| Type de document : |
texte imprimé |
| Auteurs : |
Deepika Bhatia, Auteur ; P. C. Sarkar, Auteur ; M. Alam, Auteur |
| Année de publication : |
2007 |
| Article en page(s) : |
p. 87-94 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Fourier, Spectroscopie infrarouge à transformée de
Gomme-laque
Réflexion totale atténuée
Spectroscopie de réflectance
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
Fourier Transform Infrared (FTIR) spectroscopy is well established as an analytical tool, for the determination of different functional moieties in complex matrices, including polymers and resins, both natural and synthetic. In addition to conventional KBr sampling techniques, DRIFT (Diffuse Reflectance), ATR (Attenuated Total Reflectance) and Specular Reflectance (SRS) techniques are also associated with FTIR. Specular Reflectance spectroscopy is useful in compounds having amorphous structures, as well as substances, which cannot be ground to a fine powder for KBr sampling. Such materials are therefore cast as films on reflecting surfaces and the reflectance spectra of the films are obtained, which may have to be converted to easily recognizable, transmission-type spectra, through sophisticated computerized techniques. In the present work, specular reflectance spectroscopy was utilized to ascertain molecular level differences in functional moieties of lac resin, obtained from different sources. |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11496 |
in PAINTINDIA > Vol. LVII, N° 7 (07/2007) . - p. 87-94
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