Open Access

ARTICLE

A Challenging Approach to Improve the Low Affinity of Acrylic Fibres to Be Successfully Dyed with a Bio-Colorant Extracted from Grape Marc

by Noureddine Baaka¹, Manel Ben Ticha¹, Wafa Haddar¹, Mohamed Farouk Mhenni¹

1 University of Monastir, Faculty of Sciences of Monastir, Research Unity of Applied Chemistry and Environment, 5000 Monastir, Tunisia.
2 National Engineering School of Monastir, 5019 Monastir, Tunisia.
3 Higher Institute of Technological Studies, 5070, Ksar Hellal, Monastir, Tunisia.

* Corresponding Author:*Correspondence Author: Noureddine Baaka. Email: .

Journal of Renewable Materials 2019, 7(3), 289-300. https://doi.org/10.32604/jrm.2019.04355

Abstract

Acrylic fibres are highly crystalline and non-polar polymers, which makes their dyeing a very difficult step that poses real technical challenges. In order to overcome this concern, it is intended in this paper to modify acrylic fibers by different methods namely cationisation using the Crosscolor DRT then amidoximation using hydroxylamine hydrochloride and ammonium acetate. The resulted samples were dyed then with the bio-colorant extracted from grape marc. The effect of the pretreatment on fibers fine structure using X-ray diffraction and the scanning electron microscope (SEM) images and its correlation with the colour strength of the dyed fabrics was investigated. The dyeing parameters, such as dye bath pH and temperature on the performances of this dyeing process were studied. Good dyeing qualities and new shades varying from brown to grey and dark green have been obtained following process optimization, mordanting and modification of acrylic fibers by the technique of cationisation.

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