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Dyeing Adsorption Kinetics of Thermally Unstable Pigments from Phytolacca americana L.’s Fruits on Mercerized Wool Yarns
Abstract:
To extend the application of the thermally unstable pigments from Phytolacca americana L.’s fruits on textiles, the thermal degradation kinetics and thermodynamics of pigments in solution have been studied and taken into account in dyeing processes. The experimental datas of the thermal degradation kinetics, thermodynamics and dyeing kinetics have been analyzed using First Order Reaction Kinetics, Arrhenius Equation, and Vickerstaff Adsorption Hyperbolic Curve theories, respectively. The results indicate that, the Vickerstaff Adsorption Hyperbolic Curve theories can be used to describe the dyeing adsorption kinetics of the pigments dyed on mercerized wool yarns taking thermal degradation into consideration. The values of half-time, rate constant of thermal degradation, equilibrium dyeing percentage, adsorption constant, dyeing time, dyeing temperature and others parameters also have been analyzed in this article. The appropriate dyeing time and dyeing temperature for the pigments dyed on mercerized wool yarns have been found out.
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1595-1602
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July 2012
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© 2012 Trans Tech Publications Ltd. All Rights Reserved
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