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A comparison of Indonesian and Indian shellacs using specular reflectance spectroscopy / Deepika Bhatia in PAINTINDIA, Vol. LVII, N° 7 (07/2007)
[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 réflectanceIndex. 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[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 008390 - Périodique Bibliothèque principale Documentaires Disponible Development of thin-film hydroxyapatite coatings with an intermediate shellac layer produced by dip-coating process on Ti6Al4V implant materials / A. Ritwik in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 19, N° 2 (03/2022)
[article]
Titre : Development of thin-film hydroxyapatite coatings with an intermediate shellac layer produced by dip-coating process on Ti6Al4V implant materials Type de document : texte imprimé Auteurs : A. Ritwik, Auteur ; K. K. Saju, Auteur ; Ajith Vengellur, Auteur ; P. P. Saipriya, Auteur Année de publication : 2022 Article en page(s) : p. 597-605 Langues : Américain (ame) Catégories : Adhésion
Dip-coating
Gomme-laque
HydroxyapatiteL'hydroxyapatite est une espèce minérale de la famille des phosphates, de formule Ca5(PO4)3(OH), usuellement écrite Ca10(PO4)6(OH)2 pour souligner le fait que la maille de la structure cristalline comprend deux molécules. L'hydroxyapatite est le membre hydroxylé du groupe apatite. L'ion OH- peut être remplacé par le fluor, le chlore ou le carbonate.
L'hydroxyapatite cristallise dans le système hexagonal. La poudre d'hydroxyapatite pure est blanche. Celles que l'on trouve dans la nature peuvent cependant être de couleur marron, jaune ou verte.
Métaux -- Revêtements
Titane -- AlliagesIndex. décimale : 667.9 Revêtements et enduits Résumé : A thin layer of hydroxyapatite (HAp) coating has been developed on Ti6Al4V substrates using a dip-coating process. An intermediate layer of shellac (natural resin) was applied in between the substrate and the coating film to improve the adhesion strength without the need for any secondary annealing process. The adhesion strength was measured as 7.14 MPa. The surface of the developed coating was characterized using a scanning electron microscope. The total coating thickness was found to be 30 microns, and the surface roughness parameters were measured as 0.93 μm (Ra), 1.17 μm (Rq), and 6.67 μm (Rz). The dip-coated samples were also subjected to dissolution behavior study and in vitro study. The measured parameters of the coating suggest the use of this method as an alternative to other expensive and temperature-dependent coating methods for producing HAp coating with better adhesion strength. Note de contenu : - Table 1 : Adhesion strength & coating thickness
- Table 2 : The dissolution rate of Ca and P ions for the different time periods
- Table 3 : Atomic% of Ca and P in coated substrate immersed in SBF for different time periodsDOI : https://doi.org/10.1007/s11998-021-00549-y En ligne : https://link.springer.com/content/pdf/10.1007/s11998-021-00549-y.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37290
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 19, N° 2 (03/2022) . - p. 597-605[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 23408 - Périodique Bibliothèque principale Documentaires Disponible
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Titre : In the world of wood - 2 : French polish methylated spirit base Type de document : texte imprimé Auteurs : Mukund Hulyalkar, Auteur Année de publication : 2021 Article en page(s) : p. 112 Langues : Anglais (eng) Catégories : Alcool
Bois -- Revêtements
Formulation (Génie chimique)
Gomme-laque
Laque et laquage
MéthanolIndex. décimale : 667.9 Revêtements et enduits Résumé : French polishmethylated spirit base, th is is an age old product.
French polish is a process, not just a material. The main material is shellac. Although there are several other shellac based finishes, notall are classified as French polishing. The French polish technique is an excellent method to accent exoticwood grain.
This is resin dried and then made into solution in alcohol. This is liquid shellac. Shellac was confined to the far east until traders introduced it to Europe in the 1700s, however, it wasn't until "the 18 century that the technique of using Shellac was refined by The French, hence known as French Polishing".En ligne : https://drive.google.com/file/d/18YewQ7-CMFurTicu8E5wy0G90KbLJe-P/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36470
in PAINTINDIA > Vol. LXXI, N° 8 (08/2021) . - p. 112[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 22922 - Périodique Bibliothèque principale Documentaires Disponible A shellac derivative in thermoset coatings / Jennifer T. Otto in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 7, N° 4 (07/2010)
[article]
Titre : A shellac derivative in thermoset coatings Type de document : texte imprimé Auteurs : Jennifer T. Otto, Auteur ; David L. Trumbo, Auteur Année de publication : 2010 Article en page(s) : p. 525-527 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Gomme-laque
Réticulation (polymérisation)
Revêtements:Peinture
ThermodurcissablesTags : Revêtement 'Gomme-laque' t-Butyl acetoacetate' Amine 'Addition de Michael' Réticulation Index. décimale : 667.9 Revêtements et enduits Résumé : Shellac, a naturally occurring product obtained from insects, was modified by reaction with t-butylacetoacetate. Analysis of the acetoacetylated material via NMR and elemental analysis showed that 60–80% of the available reactive moieties of shellac had been converted to ester. Crosslinked films were produced by reacting the acetoacetylated shellac with a multifunctional amine or with a multifunctional acrylate under Michael addition conditions. The films had good properties in terms of solvent resistance, hardness, and gloss, but proved to be somewhat brittle. DOI : 10.1007/s11998-010-9240-y En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-010-9240-y.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=9777
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 7, N° 4 (07/2010) . - p. 525-527[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 012362 - Périodique Bibliothèque principale Documentaires Disponible