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]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
24086	-	Périodique	Bibliothèque principale	Documentaires	Disponible

---

1 (1 - 1 / 1)