A simple theoretical model of the ion sorption equilibria in cationic dyeing systems has been developed. This model accounts for several aspects of the behavior which cannot be handled by, the existing theories. The parameter values required to fit the model to the data are in agreement with direct independent measurements of these parameters. The selectivity coefficient KNaD shows a complex behavior which cannot be explained by conventional formulations of "ion-binding" processes in the fiber.
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References
1.
Balmforth, D. , Bowers, C.A., and Guion, T.H., Acrylic-Polymer Composition and Its Relation to Basic-Dye Substantivity, J. Soc. Dyers Colourists80, 577-583 (1964).
2.
Dimo V.K., Chardalov, I., and Detscheva, R., Bestimmung undEinfluss des Effektiven Faseräquivalents auf die Farbeigenshaften von Polyacrylnitrilfasern , Melliand Textilberichte53, 328-332 (1972).
3.
Friedlander, H.N., Peebles, Jr., L.H., Brandrup, J., and Kirby, J.R., On the Chromophore of Polyacrylonitrile II-VI, MacromoleculesI, 53-86 (1968).
4.
Glenz, O. and Beckmann, W., Untersuchungen über den Färbevorgang von Polyacrylnitrilfasern mit Basischen Farbstoffen/I. Mitt, Melliand Textilberichte38, 296-300 (1957).
5.
Guion, T.H., Hossain, T.M.A., McGregor, R., and Thagard, R.J., Site-Mechanisms for the Dyeing of Acrylic-Polymer Fibers, J. Soc. Dyers Colourists89, 409-410 (1973).
6.
Harwood, R.J. , McGregor, R., and Peters, R.H., Adsorption of Cationic Dyes by Acrylic Films I—Sorption Isotherms, J. Soc. Dyers Colourists88, 216-220 (1972).
7.
Johnson; R.F. , "Some Properties of the Triphenylmethane Catonic Dye-Polyacrylonitrile FiberSystem," Doctoral thesis, Eidgenössischen Technischen Hochschule, Zurich Switzerland (1963).
8.
McGregor, R. and Harris, P.W., The Sorption of Ions by Polyamides, J. Appl. Polym. Sci.14, 513-522 (1970).
9.
McGregor, R. , Is a Unified Theory of Dyeing Possible? Part I: an analysis of the sorption of a cationic dye by an acrylic-polymer fibre , Colourage Annual, 1-5 (1970).
10.
McGregor R. , The Distribution of Dye and Inorganic Ions Between Solid Polymers and Solutions, Part I: Corrections for Adhering on Imbibed Solution, Textile Res. J.42, 172-175 (1972).
11.
McGregor, R.Ionirable Groups in Fibers and Their Role in Dyeing. An Examination of the Sorption of Anionic Dyes by Cellulosic Fibers and Films, Textile Res. J.42, 536-552 (1972).
12.
McGregor, R. and Guion, T.H., The Distribution of Dye and Inorganic Ions Between Solid Polymers and Solutions, Part II. Conventional Descriptions of Ion Binding, Textile Res. J.44, 433-438 (1974).
