Accueil
Détail de l'auteur
Auteur Christa Fitz-Binder |
Documents disponibles écrits par cet auteur
Ajouter le résultat dans votre panier Affiner la recherche
Extraction of polyphenolic substances from bark as natural colorants for wool dyeing / Christa Fitz-Binder in COLORATION TECHNOLOGY, Vol. 135, N° 1 (02/2019)
[article]
Titre : Extraction of polyphenolic substances from bark as natural colorants for wool dyeing Type de document : texte imprimé Auteurs : Christa Fitz-Binder, Auteur ; Thomas Bechtold, Auteur Année de publication : 2019 Article en page(s) : p. 32-39 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Colorants végétaux
Ecorces
Extraction (chimie)
Laine
Laque et laquage
Polyphénols
Teinture -- Fibres textilesIndex. décimale : 667.3 Teinture et impression des tissus Résumé : In Europe, considerable amounts of bark are available from wood‐processing industries such as forestry and timber production. Polyphenolic components can be collected by hot water extraction. The extracted compounds can then be applied as colorants in textile dyeing operations. In this study, a comparative assessment of four different tree species with regard to their colouristic potential for wool dyeing was performed. Aqueous extracts from alder, ash tree, spruce and oak bark were prepared and analysed for their total phenolic content and ultraviolet (UV) absorption at 360–370 nm. The extracts were used for meta‐mordant dyeing by adding iron sulphate mordant (FeSO4 × 7H2O). For comparison, iron salt‐based dye lakes were prepared and used in dyeing experiments. For each tree species, a specific correlation between the total phenolic content of the dyebath and the colour depth in terms of K/S and CIELab coordinates was observed, both for the aqueous extracts and the dye lakes. Based on this relationship, standardisation and quality control of raw materials and dye lakes can be installed as important stages in the industrialisation of natural colorants from bark. The preparation of concentrated dye lakes permits formation of a concentrated colorant as dye product, which then can be standardised and delivered to textile dyehouses, similar to synthetic dyes. The preparation of dye lakes offers a relevant route towards achieving the commercialisation of bark extracts as natural colorants. Note de contenu : - EXPERIMENTAL : Chemicals - Extract formation and dyeing experiments - Preparation of dye lakes - Analytical procedures
- RESULTS AND DISCUSSION : Direct use of extracts - Formation of lake - Comparison of extracts and dye lakesDOI : 10.1111/cote.12378 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12378 Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=31663
in COLORATION TECHNOLOGY > Vol. 135, N° 1 (02/2019) . - p. 32-39[article]Réservation
Réserver ce document
Exemplaires (2)
Code-barres Cote Support Localisation Section Disponibilité 20582 - Périodique Bibliothèque principale Documentaires Disponible 20583 - Périodique Bibliothèque principale Documentaires Disponible