Dyeing Theory

The  general  theory  of  dyeing  explains  the  interaction  between  dye,  fiber,  water and dye auxiliary. More specifically, it explains:

i.  Force of repulsion which are developed between the dye molecules and water and 
ii.  Force of attraction which are developed between the dye molecules and fibers.

These forces are responsible for the dye molecules leaving the aqueous dye liquor entering and attaching themselves to the polymers of the fibers