Almond skin, a bio-waste for green dyeing of wool fibres

Autor:	Hector Gómez-Moreno, Aïda Duran-Serra, Remedios Prieto-Fuentes, María Dolores Álvarez del Castillo, Jorge Macanás, Fernando Carrillo-Navarrete
Přispěvatelé:	Universitat Politècnica de Catalunya. Departament d'Enginyeria Química, Universitat Politècnica de Catalunya. ENMA - Enginyeria del Medi Ambient, Universitat Politècnica de Catalunya. POLQUITEX - Materials Polimérics i Química Téxtil
Rok vydání:	2022
Předmět:	Dyes and dyeing -- Chemistry Ametlles Natural dye Dyeing Polymers and Plastics Llana Wool Almond skin Almond Tints i tenyit -- Química Dyes and dyeing -- Wool Chemical Engineering (miscellaneous) Tints i tenyit -- Llana Enginyeria tèxtil::Fabricació tèxtil::Tintura [Àrees temàtiques de la UPC]
Zdroj:	Textile Research Journal. 93:1030-1042
ISSN:	1746-7748 0040-5175
DOI:	10.1177/00405175221127705
Popis:	During the industrial processing of almond fruits, tons of almond skins are generated. Valorization of blanched almond skin wastes by recovering natural polyphenols using water, instead of organic solvents, for direct application of aqueous baths for dyeing of wool fabrics was studied in this work. The results showed that it was possible to recover polyphenols from almond skins and use them as a dye for wool fibres. Kinetics of extraction was modelled by using the diffusion-based Chrastil’s model and Peleg’s empirical model, obtaining excellent fit in both cases (R2 > 0.96). The amount of polyphenol extracted was enough to achieve correct direct dyeing with excellent washing, rubbing and perspiration fastness although the shades obtained were dull. Nevertheless, it was possible to achieve a better coloration by using ion(II) sulfate as the mordant resulting in dyeings with reasonable good washing and rubbing fastness.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::775b0b61ba90031b29442fd314fb1808 https://doi.org/10.1177/00405175221127705 Zobrazit plný text záznamu