| Autor: |
Goran, AMIN, Igor, JORDANOV, Sandra, KONSTANTINOVIC, Dragan, DJORDJEVIC |
| Předmět: |
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| Zdroj: |
Annals of the University of Oradea. Fascicle of Textiles, Leatherwork; 2024, Vol. 25 Issue 1, p11-18, 8p |
| Abstrakt: |
This article presents a complex set of research activities related to the sorption analysis of the process of dyeing acrylic fibers with cationic dyes to clarify the complex events during the adsorption of dye molecules for fibers and their diffusion into the interior. Typical acrylic fibers were used for dyeing with cationic blue dye. The fiber samples were dyed in a constant bath, the initial dye concentration and dyeing time were varied. The results reveal that the degree of dye exhaustion on acrylic increases as the initial concentration of dye increases. A longer time carries a higher degree of exhaustion, the same happens with the amount of adsorbed dye per unit mass of the acrylic. Isothermal linear modeling of the dyeing process gives results according to which the Langmuir model best covers the experimental points, thus confirming the existence of monolayer dye adsorption, with a uniform distribution of adsorption heat and affinity over the homogeneous fiber surface. The Freundlich and Hill–de Boer isotherm models give somewhat weaker results for the interpretation of equilibrium acrylic dyeing. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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