Modeling of the linen fabric dyeing after previous preparation

Abstract

The study deals with modeling of linen fabric dyeing after previous scouring and bleaching. The results reveal the process of the direct dye adsorption on the fabric, as well as the capacity and energy of adsorption based on which the optimization of the dyeing process with maximum performance and minimal costs can be done. With the increase of the dye concentration during dyeing, the degree of exhaustion decreases while the longer dyeing time gives a higher degree of dye exhaustion. Variation in the adsorbed amount of adsorbate increases with the increased initial concentration and time, i.e. a bigger amount of the dye or a longer time period of dyeing causes a bigger quantity of the adsorbed dye per mass unit of the linen fabric. The advantage in results processing is given to Freundlich-s model since the maximal value of the determination coefficient can be obtained.

A Study on Sustainable Design for Indigo Dyeing Color in the Visual Aspect of Clothing

“…Second, less-polluting and more recyclable means that materials should come from local or bioregional proximity; materials can be composted through biodegradation and compost recycled to the environment when their usefulness has been exhausted. For indigo, studies have shown that lighter colors have a shorter biodegradation time, and darker colors take longer [30]. Therefore, after clothing with different indigo dyes is recycled, it will inevitably have a different biodegradation time due to the different degrees of chromaticity.…”

“…Moreover, the production steps can be complicated or simple according to requirements and designs, thus exhibiting good energy efficiency. Regarding dyeing time, dark color fabrics need a longer dyeing time, which allows fabrics to absorb more dye [30]. Therefore, regarding indigo dyeing, lighter colors are more resource-saving.…”

“…For indigo, studies have shown that lighter colors have a shorter biodegradation time, and darker colors take longer [30]. Therefore, after the indigo-dyed clothing of different colors is recycled, it would inevitably have a different biodegradation time due to the different degrees of chromaticity.…”

A Study on Sustainable Design for Indigo Dyeing Color in the Visual Aspect of Clothing

“…Furthermore, steps in the manufacturing process are suitable for being complicated or simple according to requirement or design. Regarding dyeing time, dark color fabrics need longer dyeing time, which leads fabrics to absorb more dye [21](Vučković et al, 2018).…”