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Title:Colour of flax fibres in regard to different pretreatment and dyeing processes
Authors:Fakin, Darinka (Author)
Ojstršek, Alenka (Author)
Files:URL http://dx.doi.org/10.1111/j.1478-4408.2008.00144.x
Work type:Unknown ()
Typology:1.01 - Original Scientific Article
Organization:FS - Faculty of Mechanical Engineering
Abstract:The main objective of this work was to compare the colour of different pretreated (alkaline, acidic and enzymatic) and dyed (conventional and ultrasonic-assisted) flax fibres, to establish the impact of various parameters on dyeing kinetics. Flax fibres were dyed using two direct dyes of different chemical structures and molecular mass. Diffusion profiles were established by the application of Fick's Law and dyeing behaviour was studied by means of online spectrophotometry. Finally, the dyed samples were colorimetrically evaluated and colour differences and colour strengths were subsequently calculated. The results provided evidence that a dye molecule's size has a greater influence on the exhaustion degree, migration and diffusionthan individual pretreatment processes. The determined diffusion coefficients indicated superior dye mobility and faster diffusion into the fibres when ultrasonic power was used in comparison with conventional process. Nevertheless, the colour depth obtained was found to be low after ultrasonic dyeing using a larger dye molecule, implying part degradation of CIDirect Red 80 (and total degradation of small-size dyestuff, CI Direct Red 81).
Year of publishing:2008
ISSN on article:1472-3581
COBISS_ID:12414230 Link is opened in a new window
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Record is a part of a journal

Title:Coloration technology
Shortened title:Color. technol.
COBISS.SI-ID:23383301 New window


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