A proposed novel approach to the study of the dual-mode mechanism of dyeing nylon with acid dyes

Autor: J. H. Petropoulos, Toshiro Iijima
Rok vydání: 2006
Předmět:
Zdroj: Journal of Applied Polymer Science. 103:1055-1057
ISSN: 1097-4628
0021-8995
DOI: 10.1002/app.25307
Popis: Study of the dual mode mechanism of dyeing nylon with acid dyes, consisting of Langmuir-type sorption on charged terminal amino groups, accompanied by Nernst-type uptake, known as “overdyeing,” is subject to complications primarily (but not exclusively) because of structural nonhomogeneity of the polymeric substrate. We present here a system that combines structural simplicity with ease of manipulation of amine content; wherein the nylon substrate is replaced by a liquid phase consisting of a specially selected amine dissolved in a suitable organic solvent. This system displays the characteristic features of the aforementioned dual mode dyeing mechanism, as shown by experimental data of the uptake of C.I. Orange 7 as a function of aqueous dye concentration and amine concentration in the organic phase. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 103: 1055–1057, 2007
Databáze: OpenAIRE
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