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The article focuses on Eupatorium adenophorum as a natural dye source for Mulberry silk. It also discusses the preparation of dye material, degumming of silk yarn, optimization of dye extraction time, mordants and mordanting method, optimization of mordant concentrations, optimization of dye concentration, optimization of dyeing time, pH for dyeing and tests for color fastness.

This article provides information on dyeing of woollen and cotton yarns with Eupatorium leaves. The collected leaves from the Eupatorium plant were dried in shade and then powdered to extract the dye. Mordants such as alum, potassium dichromate, ferrous sulphate and copper sulphate were used with pre, simultaneous and post-mordanting methods. For the dyeing of cotton, harda was used as the pretreating agent. Harda solution was prepared in 5 tubs containing 10 grams, 20 grams, 30 grams, 40 grams, and 50 grams of harda respectively per 100 gram yarn with material to liquor ratio 1:20. The yarns were treated in harda solution for 24 hours at room temperature. The treated yarns were exposed to sunlight for 3 hours without washing. The optimum concentration of harda was determined on the basis of per cent dye absorption. Per cent dye absorption of the dye liquors was calculated after 30 minutes, 45 minutes, 60 minutes and 75 minutes of dyeing. Optimum dyeing time for wool and cotton yarns was selected on the basis of highest per cent dye absorption. The dyed woollen and cotton yarn samples were assessed for their color fastness with four agencies viz color fastness to washing, perspiration, sunlight and rubbing.

Fast colours were obtained from dyeing of cotton yarns in Berberry roots dye extract when treated with different mordants and subjected to various agencies of colour fastness. The procedure of dyeing was found to be cost effective. [ABSTRACT FROM AUTHOR]

Presents a study which investigated the extraction of natural dye from Litchi leaves on cotton. Materials and methods; Proportions of dyeing variables for dyeing of cotton yarns with Litchi leaves extract; Cost estimation of dyeing process with different mordants on cotton with Litchi leaves.

Discusses a study on the use of Berberry dye in dyeing mulberry silken yarns. Preparation of the dye material; Methodology of dye extraction; Evaluation of the dyed silk yarn in terms of colour fastness; Optimized dyeing conditions for Berberry dye.