Adsorption isotherm of a disperse dye

An absorption isotherm equation similar in form to Langmuir's equation was obtained for monomolecular adsorption of a dye on the inner surface of a fibre for the process of dissolution of a dye in amorphous regions of a fibre using the assumptions concerning formation of dye--macromolecule fragment solvates in the ratio of 1:1. Linearity of the function 1/C^sub F^ = f(1/C^sub S^) is possible both in adsorption of the dye with formation of a monomolecular layer (Langmuir) and in dissolution of the dye in the amorphous part of the fibre-forming polymer with formation of solvates.[PUBLICATION ABSTRACT]