Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/78378
Título: | Effect of plasma and cationization pre-treatiments on fastiness and UV protection of cotton dyed with madder |
Autor(es): | Fernandes, Marta Susana Machado Alves, Cátia Sofia Pereira Rodrigues, Rui Pedro Vieira Zille, Andrea |
Palavras-chave: | Natural dyes Rubia tinctorum L. Textile DBD plasma Cationization UV protection |
Data: | 2022 |
Resumo(s): | To achieve good colour depth and fastness of naturally dyed fabrics is necessary to use mordants, usually metallic salts, which are potentially harmful to the environment and human health. In this work, the effect of plasma and cationization pre-treatments on cotton fabrics dyed with natural dye madder extract was investigated as environmentally sustainable alternative processes. Air atmospheric dielectric barrier discharge (DBD) plasma treatment showed a slight improvement in fastness to washing and UV light when samples were dyed at pH 11. On the other side, cationization with poly(diallyldimethylammonium chloride) (PDDA) greatly improved the dye uptake onto cotton, but with poor fastness. Meanwhile, the simultaneous pre-treatment with metallic mordants improved significantly the fastness properties, being the PDDA/Fe pre-treatment, followed by dyeing at pH 5, the process which showed the best results regarding colour strength, fastness to UV light, and UV protection. |
Tipo: | Artigo em ata de conferência |
URI: | https://hdl.handle.net/1822/78378 |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: | DET/2C2T - Comunicações em congressos internacionais com arbitragem científica |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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2022 MARTA ICON2022.pdf | 3,47 MB | Adobe PDF | Ver/Abrir |