Confocal microscope : A valuable tool for examining wood-coating interface / Adya P. Singh in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 1, N° 3 (07/2004)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 1, N° 3 (07/2004) . - p. 235-237 Titre : Confocal microscope : A valuable tool for examining wood-coating interface Type de document : texte imprimé Auteurs : Adya P. Singh, Auteur ; Bernard S. W. Dawson, Auteur Année de publication : 2004 Article en page(s) : p. 235-237 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Bois -- Revêtements protecteurs Bois -- Vernis Chimie des surfaces Durée de vie (Ingénierie) Interfaces (Sciences physiques) Microscopie confocale Photodétérioration Polyuréthanes Résistance aux conditions climatiques Index. décimale : 667.9 Revêtements et enduits Résumé : The suitability of confocal laser scanning microscopy (CLSM) in examining a wood-coating interface was evaluated using a clear coating system. A comparison of the images of the wood-clear coating interface obtained using CLSM and light microscopy (LM) showed a marked superiority of CLSM in revealing the details of the physical nature of the interaction between the clear coating and the wood cell walls in the surface layer. The most distinct advantage of CLSM was in its ability to clearly resolve penetration of the coating into very fine cracks in cell walls, details not obtainable with LM. The information presented here demonstrates that CLSM has the potential to greatly enhance our understanding of the physical aspects of an interaction between the wood and coating at the interface. DOI : 10.1007/s11998-004-0017-z En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-004-0017-z.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=3915 [article]

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Microscopic assessment of the effect of saw-textured pinus radiata plywood surface on the distribution of a film-forming acrylic stain / Adya P. Singh in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 3, N° 3 (07/2006)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 3, N° 3 (07/2006) . - P. 193-201 Titre : Microscopic assessment of the effect of saw-textured pinus radiata plywood surface on the distribution of a film-forming acrylic stain Type de document : texte imprimé Auteurs : Adya P. Singh, Auteur ; Bernard S. W. Dawson, Auteur Année de publication : 2006 Article en page(s) : P. 193-201 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Bois -- Revêtements protecteurs Conifères Contreplaqué Lasures Microscopie Morphologie (matériaux) Polyacryliques Index. décimale : 667.9 Revêtements et enduits Résumé : The micro-morphology of the wood-coating interface of saw-textured Pinus radiata plywood panels, which had been coated with a film-forming stain, was examined using a range of microscopic techniques. The surface appearance and tissue deformation characteristics of saw-textured plywood and the pattern of distribution of the applied coating were observed by combined light, confocal, and scanning electron microscopy. The saw-textured surface was highly irregular, with surface tissues greatly distorted, being bent, twisted, and occasionally detached, and showing extensive cell wall cracking. The applied coating conformed closely to the contours of the saw-textured surface, resulting in a highly variable film thickness. The film was thickest in the grooves and thinnest over the ridges, and in places discontinuous, particularly where wood cells protruded out of the wood surface. These and other salient features of the surface of saw-textured plywood are discussed in relation to the pattern of the applied acrylic stain topcoat. DOI : 10.1007/BF02774508 En ligne : https://link.springer.com/content/pdf/10.1007%2FBF02774508.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=3692 [article]

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A novel method for high-resolution imaging of coating distribution within a rough-textured plywood surface / Adya P. Singh in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 4, N° 2 (06/2007)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 4, N° 2 (06/2007) . - p. 207-210 Titre : A novel method for high-resolution imaging of coating distribution within a rough-textured plywood surface Type de document : texte imprimé Auteurs : Adya P. Singh, Auteur ; Bernard S. W. Dawson ; Anni Ratz, Auteur Année de publication : 2007 Article en page(s) : p. 207-210 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Bois -- Teinture Contreplaqué Huiles et graisses Imagerie numérique Interfaces (Sciences physiques) Microscopie électronique à balayage Pénétration (physique) Index. décimale : 667.9 Revêtements et enduits Résumé : A new method was developed which enabled us to obtain high-resolution images of the distribution of an oil-borne stain in a saw-textured plywood surface. The method involved treating 90 µm thick plywood sections, which had been cut transversely through the wood-coating interface using a sliding microtome, with osmium tetroxide (OsO4) prior to examination with a field-emission scanning electron microscope (FE-SEM) operating in backscattered electron imaging (BEI) mode. The combination of OsO4 staining and use of FE-SEM-BEI afforded excellent contrast differentiation between the coating and wood cell walls, revealing coating penetration into even nano-size cell wall cracks and delaminations formed during band-sawing of the plywood. The novel technique described adds a new dimension to probing wood-coating interface. DOI : 10.1007/s11998-007-9019-y En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-007-9019-y.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=3663 [article]

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