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This study aimed to evaluate the process of silk dyeing with the extract of eucalyptus leaves. pH, temperature, initial extract concentration was investigated. The initial extract concentration of 20 g L-1, pH 3 and temperature of 90 °C were the conditions which yielded the best results from dyeing. The pseudo-second order model was the one that best represented the kinetic mechanism of dyeing, indicating that chemisorption was the main mechanism involved. The equilibrium data were adjusted to the Langmuir-Freundlich model indicating significant contribution from the chemisorption process. Dyeing with the extract of eucalyptus leaves is a spontaneous and endothermic process with a high degree of disorder. The notes washing fastness of dyed fabrics were 3-4 for the color change and 4 for staining on cotton and wool.
Nivea Tais Vila. 2018. \u201cNatural Dyeing of Silk with Eucalyptus Leaves Extract\u201d. Global Journal of Research in Engineering - C: Chemical Engineering GJRE-C Volume 18 (GJRE Volume 18 Issue C1): .
Crossref Journal DOI 10.17406/gjre
Print ISSN 0975-5861
e-ISSN 2249-4596
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Total Score: 106
Country: Brazil
Subject: Global Journal of Research in Engineering - C: Chemical Engineering
Authors: MArcia Gomes da Silva, Nivea Tais Vila, Alexandre Jos Sousa Ferreira, Andreia Bortoluzzi da Silva, Pedro Augusto Arroyo, Maria Anglica S. D. de Barros (PhD/Dr. count: 0)
View Count (all-time): 181
Total Views (Real + Logic): 3098
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Publish Date: 2018 05, Tue
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This study aimed to evaluate the process of silk dyeing with the extract of eucalyptus leaves. pH, temperature, initial extract concentration was investigated. The initial extract concentration of 20 g L-1, pH 3 and temperature of 90 °C were the conditions which yielded the best results from dyeing. The pseudo-second order model was the one that best represented the kinetic mechanism of dyeing, indicating that chemisorption was the main mechanism involved. The equilibrium data were adjusted to the Langmuir-Freundlich model indicating significant contribution from the chemisorption process. Dyeing with the extract of eucalyptus leaves is a spontaneous and endothermic process with a high degree of disorder. The notes washing fastness of dyed fabrics were 3-4 for the color change and 4 for staining on cotton and wool.
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