Influence of biocide pre-treatment of wood on performance of exterior coatings / M. Palvic in SURFACE COATINGS INTERNATIONAL. PART B : COATINGS TRANSACTIONS, Vol. 88, B1 (03/2005)  

[article]  inSURFACE COATINGS INTERNATIONAL. PART B : COATINGS TRANSACTIONS > Vol. 88, B1 (03/2005) . - p. 41-48 Titre : Influence of biocide pre-treatment of wood on performance of exterior coatings Type de document : texte imprimé Auteurs : M. Palvic, Auteur ; M. Petric, Auteur ; M. Tomazic, Auteur ; B. Kricej, Auteur Année de publication : 2005 Article en page(s) : p. 41-48 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Adhésion Antimicrobiens Bois -- Revêtements protecteurs Bois extérieurs Bore Epicéas et constituants Formulation (Génie chimique) Lasures Perméabilité Polyacryliques Polyalkydes Résistance aux taches Revêtement -- Séchage Revêtements organiques Index. décimale : 667.9 Revêtements et enduits Résumé : Exterior coatings may not provide sufficient protection of wood against biodeterioration. In order to minimise the decay risk, wood can be impregnated with biocides before finishing. However, pretreatment of wood may have an effect on some important properties of surface coatings. The authors impregnated spruce wood specimens with a new preservative formulation, containing the ester of boric acid with an alkanolamine. The aim of this research was to establish a possible influence of this biocide on the performance of acrylic and alkyd stains on pre-treated wood. They studied the drying characteristics, stackability, adhesion, and permeability of the coatings. A boron-based preservative in a treated spruce wood had a pronounced influence on the drying of coatings and on the permeability of the acrylic stain. However, the influence on adhesion of the coatings was only indicated. Note de contenu : - Test systems - Boron diffusion - Drying characteristics - Stackability - Adhesion - Permeability of the coatings DOI : 10.1007/BF02699706 En ligne : https://link.springer.com/content/pdf/10.1007/BF02699706.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5435 [article]

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Natural weathering of spruce wood chemically modified by re-used e-caprolactone solution / Merve Cambazoglu in COLORATION TECHNOLOGY, Vol. 139, N° 3 (06/2023)  

[article]  inCOLORATION TECHNOLOGY > Vol. 139, N° 3 (06/2023) . - p. 265-275 Titre : Natural weathering of spruce wood chemically modified by re-used e-caprolactone solution Type de document : texte imprimé Auteurs : Merve Cambazoglu, Auteur ; Eylem Dizman Tomak, Auteur ; Mahmut A. Ermeydan, Auteur Année de publication : 2023 Article en page(s) : p. 265-275 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Analyse morphologique Bois -- Conservation Colorimétrie Epicéas et constituants Hydrophobie Poly-e-caprolactone Rugosité Index. décimale : 674.1 Texture, propriétés, types de bois de Résumé : Increasing environmental pressures over the last few years have led to attention for non-biocide treatments in the wood protection field. The ε-caprolactone modification of wood by substitution or blocking of hydroxyl groups with hydrophobic poly(ε-caprolactone) (PCL) is one of the novel modification methods developed in recent years. In this study, ring-opening polymerisation of ε-caprolactone in wood cell walls was evaluated by the third and sixth re-use of recovered monomer and by oven-curing method. Spruce samples were modified by re-used ε-caprolactone and exposed to the natural weathering agents for 12 months. After weathering, the colour change, surface roughness measurements, and macroscopic and ultra-microscopic observations revealed that the modified wood had better surface properties than reference wood. Fourier-transform infrared (FTIR) analysis proved that PCL could be found on the weathered surface up to the sixth month, but very little amount was detected on the surfaces with a longer weathering period. The results clearly showed that the efficiency of PCL modification with re-use of the monomer solution was sufficient during the initial weathering periods, but efficiency was reduced after a prolonged exposure period. Note de contenu : - MATERIALS AND METHODS : Materials - Poly(ε-caprolactone) (PCL) modification - Natural weathering - Colour and surface roughness measurement - Fourier-transform infrared (FTIR) analysis - Morphological analysis by scanning electron microscopy (SEM) - RESULTS AND DISCUSSION : Weight percentage gain (WPG) and volume change (VC) of the samples - Colour changes after the natural weathering test - Surface chemistry analysis after the natural weathering test - Surface roughness changes after the natural weathering test - Table 1 : Weight percentage gain (WPG) and volume change (VC) of samples after the modification process - Table 2 : Intensity ratio of cellulose (899 cm−1) and lignin (1508 cm−1) related bands during weathering DOI : https://doi.org/10.1111/cote.12645 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12645 Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39537 [article]

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Patination of cherry wood and spruce wood with ethanolamine and surface finishes / M. Petric in SURFACE COATINGS INTERNATIONAL. PART B : COATINGS TRANSACTIONS, Vol. 87, B3 (09/2004)  

[article]  inSURFACE COATINGS INTERNATIONAL. PART B : COATINGS TRANSACTIONS > Vol. 87, B3 (09/2004) . - p. 195-201 Titre : Patination of cherry wood and spruce wood with ethanolamine and surface finishes Type de document : texte imprimé Auteurs : M. Petric, Auteur ; B. Kricej, Auteur ; M. Humar, Auteur ; M. Pavlic, Auteur ; M. Tomazic Année de publication : 2004 Article en page(s) : p. 195-201 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Bois -- Finition Bois -- Revêtements protecteurs Epicéas et constituants Ethanolamine L'éthanolamine, également appelée 2-aminoéthanol ou monoéthanolamine, est un composé chimique organique qui est à la fois une amine primaire (par son groupe amine) et un alcool primaire (par son groupe hydroxyle). À l'instar des autres amines, la monoéthanolamine se comporte en base faible. L'éthanolamine est un liquide toxique, inflammable, corrosif, incolore et visqueux ; son odeur est similaire à celle de l'ammoniac. Merisier Patine Index. décimale : 667.9 Revêtements et enduits Résumé : The appearance of age or the so-called patina of cherry wood and spruce wood was obtained by treatment with ethanolamine vapours. Chemical changes in the treated wood were investigated by FT-IR spectroscopy, electron paramagnetic resonance and nitrogen content analysis. It was shown that the use of aggressive and toxic ammonia could be replaced by fuming with ethanolamine. Extensive colour stability experiments of patinated cherry wood that was coated with linseed oil varnish, linseed oil, beeswax or nitro-cellulose lacquer indicated that the described antiquing method represents a new possibility for producing various wood products with the appearance of age. Note de contenu : - MATERIAL AND METHODS : Wood specimens, amine treatment procedures and surface finishing - UV irradiation - FT-IR spectroscopy - EPR spectroscopy - Nitrogen analysis in the fumed specimens - Measurements of colour changes as a result of antiquing and during exposure to various conditions - RESULTS AND DISCUSSION : Possibility of wood darkening with ethanolamine vapours - Chemical changes n antiqued cherry and spruce wood - Colour changes of fumed spruce wood - Colour properties of ethanolamine treated and surface-finished cherry wood - Table 1 : Colours of the amine treated and UV-irradiated cherry wood - Table 2 : Nitrogen content in ammonia and ethanolamine treated cherry and spruce wood - Table 3 : Colours of ethanolamine untreated and ethanolamine treated cherry wood and colour changes after appilcation of surface coatings - Table 4 : Comparison of ΔE values of ethanolamine untreated or ethanolamine treated and coated cherry wood samples after 232-day storage in dark or exposure to light DOI : 10.1007/BF02699635 En ligne : https://link.springer.com/content/pdf/10.1007/BF02699635.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5461 [article]

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