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Abstract
Trends in Textile Engineering & Fashion Technology
The Effect of Guanidine on Colour Fastness of Acid Dyes Applied to Polyamide Fibres
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Open or CloseDavid M Lewis1* and Megan A Davenport-Connolly2
1University of Leeds, School of Chemistry, UK
2Royal Academy of Engineering, 3 Carlton House Terrace, UK
*Corresponding author:David M Lewis, School of Chemistry, University of Leeds, Leeds LS2 9JT, UK
Submission: March 12, 2024;Published: March 22, 2024
ISSN: 2578-0271Volume9 Issue5
Abstract
Guanidine is a very strong base and even under alkaline conditions above pH 11 is present in aqueous
conditions as the protonated guanidinium cation. This property does not seem to have been exploited for
fixing sulfonated dyes on polyamide substrates.
This study demonstrates that guanidine chloride can be used to after-treat acid dyeings on nylon 6,6 to
impart very good wash-fastness properties. The after-treatment can be carried out effectively at pH 10
for 15 minutes.
Keywords:Alkaline; Guanidinium cation; Polyamide substrates
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