Mechanism of Space Dyeing

In space dyeing, mordant is mostly used to chemically fix the dyestuff to substrate and the fixation of dyestuff is permanent type. There are three different ways to apply a mordant but mechanism of mordant stays same for all types of applications
. Mordant must be metallic. In short, a mordant is the reagent that fixes the color to the yarn.
Mordant is used in conjunction with the dye to chemically bond the dye to the surface by the formation of coordination complex. In a coordination complex, metallic atoms from the mordant create intense bond with the molecules of nearby dye, creating a powerful bond that water cannot easily disintegrate.
Metal is needed to create the intense bond between the mordant and dye because, otherwise, the coordination complex cannot be completed. Since different colors of dye require different types of mordants, this makes it possible to dye the same skein of yarn with many different colors. In general, space dyeing provides adequate color absorption and penetration for most materials when used with mordants. Thick and highly twisted yarns may not have good dye penetration even with the use of mordants.