The effect of dye plant amounts on color and color fastness of wool yarns/Influenta cantitatii de colorant din plante asupra culorii si rezistentei vopsirii firelor de lâna

• Published in: Industria textilă (Bucharest, Romania : 1994) Vol. 65; no. 1; p. 29
• Main Authors: Inan, Memet, Kaya, Durmus Alpaslan, Kirici, Saliha
• Format: Journal Article
• Language: English
• Published: Bucharest The National Research & Development Institute for Textiles and Leather - INCDTP 01.01.2014
• Subjects: Aluminum; Color; Dyes; Effects; Potassium; Studies; Textiles; Wool; Yarn
• ISSN: 1222-5347

Walnut, sumac, pomegranate, madder and oak are plants widely used in natural dying. In order to measure fastness degree of wool dyed with these plants, dying were made by using mordant of alum. So, plant organs crushed at the weight of 25%, 50%, 100% and 200% of wool weight were used. Dark colors were determined at all samples with which plant two times of wool weight were used. However, as dye concentration increased, rubbing and washing fastness in wools decreased; whereas wet water dropping fastness increased. Dry water dropping fastness obtained from all concentration were found to be high (4-5). Several bright colors with different shades were obtained depending on the nature of the used substrate, the concentration of the dye in the dying bath, and the type of the used mordant [8]. Moreover, mordants can make a positive impact on fastness values [9]. Plant species, mordants, the amount of mordant and dyeing methods are effective on fastness [10]. The effects of mordant on fastness have been known for a long time. There are many publications of fastness values [1], [3], [6], [8], [9], [11], [12]. Studies carried out related with the effect of amount of plant used on values fastness are limited. The aim of this study was determining values fastness of wool yarns and color transformation by using different amounts of plants. The dyed wool yarns were tested for rub fastness, wash fastness and water spotting (wet and dry) fastness. The rub fastness of dyed fiber was carried out by Textiles - Tests for colour fastness. Part X12: Colour fastness to rubbing [14]. The wash fastness was carried out by Textiles - Tests for colour fastness - Part C10: Colour fastness to washing with soap or soap and soda [15]. The water spot fastness was carried out by Textiles - Tests for colour fastness. Part E07: Colour fastness to spotting: Water [16]. This standard specifies a method for determining the resistance of the colour of textiles of all kinds and in all forms to spotting by water. Fastness measurements were made by researchers from Ankara University, College of Home Economics, Craft Department. Different plants and quantities of the plants were used in this research. The color of dye plants became darker by increasing the amount of plants in all studied samples. This is probably because the dyestuff concentration was increasing in the water solution. Thus, increasing the dye concentration darker shades were obtained. Tera et all. (2012) reported that the dying process is the availability of the dye molecules in the vicinity of fibers in the dyeing solution, and this in turn increases with increasing dye concentration in the solutions; similar results were obtained also in this study. The treated samples subject to light showed fairly good (3 to 4) rub and wash fastness for all ratio the amount of plants. However, while the amount of plants were increased, rubbing and washing fastness values were decreased. But, wet water drooping fastness was increased. Equal wool and plant samples gave medium values while 200% samples recorded low rub and wash fastness. The dry water dropping fastness grades ranged between excellent to good (4 to 5) for all of the treated samples. Fastness and the colors scales from all applications were shown in the table 1.