Dyeing method for protein fiber non-aqueous medium

Abstract

The invention provides a dyeing method for a protein fiber non-aqueous medium, comprising the following steps: S1, a dyeing liquid is provided. The dyeing liquid comprises a reactive dye and a reversemicelle solution for encapsulating the micro-aqueous phase of the reactive dye; the reactive dye is a water-soluble reactive dye for protein fibers; the reverse micelle solution is formed by mixing and dissolving a surfactant and a cosurfactant in an organic solvent; the surfactant is a nonionic surfactant, and the organic solvent is alkane having C7 or above; and S2, the protein fiber undergoesdyeing and fixation in the dyeing liquid at the temperature of less than or equal to 90 DEG C so as to obtain dyed fiber. The protein fiber such as wool and the like undergoes dyeing and fixation in one bath by one step. According to the non-aqueous medium dyeing method of encapsulating the micro-aqueous phase of the reactive dye by using reverse micelles, there is no need to add salt or regulatepH value, and the dyeing temperature is low. Experiments show that the dyed wool has no obvious fiber damage and the dyeing effect is good. The method of the invention can reduce the processing amountof colored wastewater and is environmentally friendly.

Description

technical field [0001] The invention relates to the technical field of protein fiber dyeing, in particular to a method for dyeing protein fiber in a non-aqueous medium. Background technique [0002] Wool is an excellent natural protein fiber with a complex surface structure, which is one of the most important fibers in the textile industry. But there are also some technical problems, such as wettability and so on. Due to the presence of a large number of disulfide bonds in the outer cuticle of the fiber and fatty acids on the surface of the fiber, the surface of the wool fiber is hydrophobic. The surface morphology of wool plays an important role in wool processing. [0003] In industrial production, acid dyes, metal complex dyes and reactive dyes can be used in the dyeing process of wool fabrics, which have been widely used in industrial practice for many years. During the printing and dyeing process of wool, the hydrophobic property of the wool surface is not conducive ...

AI Technical Summary

Problems solved by technology

However, it is easy to cause problems such as rough hand feeling, poor hand feel and poor performance of dyed fabrics, which will affect consumers' wearing, care and aesthetics.

Moreover, in the traditional reactive dye wool water-based dyeing (water as medium) process, a large amount of salt needs to be added in the dyeing step, and acetic acid is used to adjust the pH value in the color-fixing step, so cumbersome wastewater treatment is required to reduce the waste water in the environment. load in

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