Abstract
Pigment printing was carried out on lab scale by simple screen-printing techniques. By the application of acrylate and butadiene based binder, the crocking fastness, formaldehyde release and PVC migration of fabric printed with Imparon red KB pigment was evaluated. The effect of curing time on K/S values was also investigated. It has been found that butadiene based binder shows good performance in terms of crocking fastness, formaldehyde release and PVC migra-tion. It has also been observed that by increasing the binder concentration, the release of formaldehyde decreased and by increasing the curing time, the K/S values of printed fabric were decreased.
Highlights
Cotton is one of the most important fibers in the textile industry and its coloration could be achieved with either dyes, by dyeing or printing in aqueous solution, or with pigment by using a print paste
The pigment printing was performed with 5% Imparon red KB pigment in the laboratory with simple screen printing method
As the binder concentration increases, the K/S values of both printed fabric treated with acrylate and butadiene based binder increases the K/S values recorded for fabric treated with butadiene was higher than the fabric treated with acrylate based binder (Figure 2)
Summary
Cotton is one of the most important fibers in the textile industry and its coloration could be achieved with either dyes, by dyeing or printing in aqueous solution, or with pigment by using a print paste. The use of pigments for printing of textile products has dramatically increased over the last 50 years. Depending upon the properties required in the binding film (softness, elasticity, plasticity, solvent stability), binders can be tailor-made by choosing suitable base product. Binders are the mechanism used to keep the color on the fabric when using pigments for printing textiles. The place to start to determine which final fabric properties are important as various end use applications may require a different polymer to achieve the desired results [6]. Almost all the binders used in textile pigment printing are the addition polymerization products. They are copolymer type; the structure may be represented as Figure 1 [7]
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