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

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 D...

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Bibliographic Details
Published in:Journal of renewable materials 2019-01, Vol.7 (3), p.289-300
Main Authors: Baaka, Noureddine, Ticha, Manel Ben, Haddar, Wafa, Mhenni, Mohamed Farouk
Format: Article
Language:English
Subjects:
Acetic acid
Acrylics
Ammonium
Ammonium acetate
Bio-Colorant
Coloring agents
Dyeing
Dyes
Fibers
Fine structure
Grape Marc
Grapes
Hydroxylamine
Modified Acrylic Fibers
Mordant
Optimization
Polymers
Pretreatment
Scanning electron microscopy
Shades
Ultrastructure
X-ray diffraction
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Summary: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.
ISSN:2164-6325
2164-6341
2164-6341
DOI:10.32604/jrm.2019.04355