Kinetic and thermodynamic analysis study of the dyeing process of acrylic fabrics with basic dyes in presence of organic solvents

Acrylic fiber is one of the important fibers which have been dominating the textile field because of its superior quality like light weight, soft feel and warmth retaining characteristics1.Cationic dyes can readily be applied to acrylic fibers and adsorbed by acrylic fibers to give Langmuir type of isotherms2. The dyes are bonded to the acidic or anionic sites present in the fiber. The number of such sites vary from fiber to fiber depending upon the acidic groups available and generally limited3. The acrylic fiberdye system is characterized by its high sensitivity, both the composition and the morphology of the fiber must be taken into account because of their influence on the kinetic and equilibrium states of the system. This sensitivity and differences in dyeing Material Science Research India Vol. 7(1), 25-36 (2010)