Potential for carrying dyes derived from spalting fungi in natural oils / Sara C. Robinson in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 14, N° 5 (09/2017)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 14, N° 5 (09/2017) . - p. 1107-1113 Titre : Potential for carrying dyes derived from spalting fungi in natural oils Type de document : texte imprimé Auteurs : Sara C. Robinson, Auteur ; Sarath Mercedes Vega Gutierrez, Auteur ; Rosa Amelia Cespedes Garcia, Auteur ; Nicole Iroume, Auteur ; Nikole Renee Vorland, Auteur ; Amy McClelland, Auteur ; Megan Huber, Auteur ; Savannah Stanton, Auteur Année de publication : 2017 Article en page(s) : p. 1107-1113 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Bois Champignons et constituants Colorants végétaux Huiles et graisses végétales Matériaux -- Coloration Mélanges (chimie) Index. décimale : 667.9 Revêtements et enduits Résumé : Wood colored internally by fungi has long been used by woodcrafters and artisans as a substitute for synthetic dyes. Recent advances in the field of spalted wood have led to methods by which the fungal dyes can be extracted from either a fungal solution or colonized wood and then reapplied to clear wood. This takes the “guess work” out of spalting, as well as the time necessary for fungal colonization; however, it requires organic solvents like dichloromethane, which are toxic and not readily available to consumers. Herein, the authors show that the dyes can be successfully carried and blended together (to increase the range of colors) in a range of natural oils. The blue–green dye of Chlorociboria species, called xylindein, carried best in raw linseed oil, the red dye of Scytalidium cuboideum performed best in Danish oil, although more dye could be carried in raw linseed oil, and the yellow dye of Scytalidium ganodermophthorum performed best in walnut oil. The ability to carry and mix these dyes in easily purchased, nontoxic oils opens up their use to woodworkers who seek to follow the traditions of spalted wood, but do not have the skills or time to work with live fungal cultures or fungal dyes suspended in toxic organic solvents. Note de contenu : - EXPERIMENTAL METHODS AND MATERIALS : Dyes - Submersion in oils - Tests - Analysis - RESULTS : Carrying capacity - Interactions - Solids - Blends DOI : 10.1007/s11998-017-9919-4 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-017-9919-4.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=29145 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
19230	-	Périodique	Bibliothèque principale	Documentaires	Disponible

Spalting colorants as dyes for wood stabilizers / He Rui in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 16, N° 3 (05/2019)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 16, N° 3 (05/2019) . - p. 905-911 Titre : Spalting colorants as dyes for wood stabilizers Type de document : texte imprimé Auteurs : He Rui, Auteur ; S. C. Robinson, Auteur ; Patricia Vega Gutierrez, Auteur ; Savannah Stanton, Auteur Année de publication : 2019 Article en page(s) : p. 905-911 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Antifongiques Bois -- Conservation Colorants végétaux Colorimétrie Extraction (chimie) Stabilisants (chimie) Index. décimale : 667.9 Revêtements et enduits Résumé : Spalted wood stabilization through various heat-treated resins has become a popular method for dealing with heavily decayed wood that no longer has enough structure to be usable. Among the most popular resins are the solutions of mixed methacrylated esters, which are often tinted with synthetic colorants to add an artificial colored layer to zone line-spalted wood as well as to stabilize the white-rotted areas. This research found that spalting pigments (technically dyes, but referred to as pigments in biological fields)—extracted from spalted wood—could be used in place of the synthetic colorants, thereby adding additional spalting to the wood without any associated decay (and adding additional spalting while stabilizing the wood with the same type of fungi that decayed it in the first place). Of the three fungi tested, the red pigment from Scytalidium cuboideum had the deepest penetration (complete) of the wood and was color stable after the curing process. While the blue–green pigment from Chlorociboria aeruginosa effectively colored the surface of the wood, it did not appear internally. The yellow pigment from S. ganodermophthorum did not show on the wood. None of the fungal colorants affected the properties of the methacrylation. The results of this study offer an intriguing opportunity to replace synthetic colorants with natural ones, which may be particularly attractive to turners of spalted wood who tend to prize natural color over synthetic. Note de contenu : - MATERIALS AND METHODS : Fungi - DCM preparations - Extraction via cactus juice - Stabilization - Cutting rotation test - Data analysis - RESULTS : Direct extraction via cactus juice - Treatment and color analysis - Cutting rotation test DOI : 10.1007/s11998-019-00203-8 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-019-00203-8.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=32601 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
20953	-	Périodique	Bibliothèque principale	Documentaires	Disponible

---

1 (1 - 2 / 2)