Investigation into the Use of Gelatin as a Buffer in the Dyeing of Wool with Indigo

Satyadev Rosunee; Rishta Chinniah; Chris Carr

doi:10.4028/www.scientific.net/KEM.671.71

Paper Titles

Dyeing Properties of the Plasma-Treated Wool Dyed with Lanasol CE Series Reactive Dyes
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Application of Dissolved Wool Keratin in Anti-Pilling Processing
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Physical and Chemical Changes of Wool Fabrics after Artificial Ageing
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The Water Footprint of Wool Scouring
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Investigation into the Use of Gelatin as a Buffer in the Dyeing of Wool with Indigo
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Recyclable Reactive Dyeing of Wool Fabrics in Environmental Friendly Non-Aqueous Medium for a more Sustainable Textile Industry
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Like Follicle, like Fibre? Diameter and not Follicle Type Correlates with Fibre Ultrastructure
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The Dissolution of Wool in Alkali Solution and the Changes of Fiber Structure and Performance
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A Study of the Ability of Modified Dyeing, and Post-Dyeing Processes to Increase the Crystallinity of Dyestuffs and the Lightfastness of Wool Textiles
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Investigation into the Use of Gelatin as a Buffer in the Dyeing of Wool with Indigo

Abstract:

The effect of varying gelatin concentration and temperature on the levelness of wool dyed with 2.0% o.m.f. indigo for various time periods was investigated. The degree of levelness was measured in terms of (RUI)_Cvalues. (RUI)_Cstands for corrected relative unlevelness index as reported in the work of Chong et al. [1]. The colour fastness to washing of the indigo-dyed wool using gelatin as a buffer was also determined.Gelatin, used as a buffer, potentially maintained the dyebath pH at a constant value of 10 which consequently reduced the colour variations between dyeings. The levelness of dyeing and depth of shade was found to be unaffected by varying concentrations of gelatin. While longer dyeing times resulted in higher degree of levelness and enhanced shade depths, higher dyeing temperatures did not favour the dyeing of wool with indigo, in that lower shade depths and reduced levelness were achieved. Dyeings of excellent wash fastness and dry and wet rubbing fastness were obtained.