Please use this identifier to cite or link to this item: http://nopr.niscair.res.in/handle/123456789/14269
Title: Kinetics and thermodynamics of dye extracted from <i>Arnebia nobilis</i> Rech.f. on wool
Authors: Arora, Anjali
Gupta, Deepti
Rastogi, Deepali
Gulrajani, M L
Keywords: <i style="">Arnebia nobilis</i> Rech.f.
Dyeing
Kinetic studies
Natural Dye
Thermodynamic studies
Wool
Issue Date: Jun-2012
Publisher: NISCAIR-CSIR, India
Abstract: Kinetic and thermodynamic studies have been conducted with the crude dye extract of <i style="">A. nobilis</i> on wool fabric. On comparing the dyeing results of this dye with those of other natural dyes (juglone, lawsone and <i style="">Rheum emodi</i>), it is found that the diffusion coefficient of this dye is slightly lower. The dyeing mechanism corresponds to the partition mechanism, confirming that this naphthoquinonoid based colourant is adsorbed by wool fabric as a disperse dye. The dyeing process is exothermic. The rate of dye uptake, diffusion coefficient, standard affinity, heat of dyeing and entropy have also been calculated and discussed. Heat of dyeing and entropy are found to be negative.
Description: 178-182
URI: http://hdl.handle.net/123456789/14269
ISSN: 0975-1025 (Online); 0971-0426 (Print)
Appears in Collections:IJFTR Vol.37(2) [June 2012]

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