Dyeing of Cationized Cotton Fabrics with Natural Dye Extracted from Acacia

Abstract

Abstract Cotton, like most text ile fibres, was negative charged in neutral and alkali aqueous solutions. Dyestuffs, optical brighteners and finishing agents in aqueous solution have the same electrical charge as cotton. Therefore, adsorption processes were difficult due to these repulsive forces. This paper studied the dyeing of alkaline extraction of acacia bark after the finishing of mod ified cotton -by cationization. In this paper, cat ionization of cotton fabric for achieving electropositive charge and better adsorption properties was carried out with cationic co mpound produced fro m extractable solution of chicken feather. The dyeing of cationized cotton fabrics using colouring matter ext racted fro m acacia bark has been studied. The application of the ext ractable solution of chicken feather with cotton was studied. Color measurements were carried out to evaluate the shade obtained. The dyed fabrics were subjected for analysis in terms of K/S, CIE L* a* b*, hue and chro ma as well as their fastness properties. The results indicated the dye extraction was more effective at alkaline med iu m. The colour measurement values were found to be better with cation izat ion than the untreated samples. The results with the fastness properties were fro m fair fo r untreated samples to good with the cationized fabrics