Sorption of Fluorinated Azo Dyes Containing Two Sulfonate Groups by a Nylon 6 Film.

Hamada, Kunihiro; Oshiki, Ken-ichi; Shirai, Hirofusa

doi:10.2115/fiber.55.12_584

Cited by 2 publications

(2 citation statements)

References 9 publications

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“…In the case of the sorption isotherm at pH 3 in the absence of bolaform electrolytes the amount of dye sorbed (r) approached a constant value in the high dye concentration (C dye) region, while in its presence the amount of dye sorbed increased with increasing dye concentration, even at high dye concentrations. The sorption isotherms were analysed using the following bimodal sorption equation (Eqn 1) [5,6,[10][11][12][13][14][15]:…”

Section: Sorption Isothermsmentioning

confidence: 99%

Sorption of an acid dye by silk fibre in the presence of bolaform electrolytes containing pyridine rings

Hamada

Xiang-rong

2003

Coloration Technology

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The sorption behaviour of the acid dye, sodium 1‐phenylazo‐2‐hydroxy‐6‐naphthalenesulphonate, by silk fibre was investigated in the presence and absence of cationic bolaform electrolytes containing pyridine rings. These electrolytes were found to influence dye sorption to an extent depending on the pH of the dyebath. At pH 3, sorption decreased slightly with increasing electrolyte concentration, but in pure water it increased. It was found that although the number of binding sites and the intrinsic binding constant for Langmuir‐type sorption were hardly affected by the presence of bolaform electrolytes, the partition coefficient was significantly enhanced both at pH 3 and in pure water. This result is explained by the sorption of a dye–bolaform electrolyte complex by the silk. The influence on the sorption by the terminal groups on the bolaform electrolyte are discussed and compared with that of an aliphatic analogue.

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Section: Sorption Isothermsmentioning

confidence: 99%

Sorption of an acid dye by silk fibre in the presence of bolaform electrolytes containing pyridine rings

Hamada

Xiang-rong

2003

Coloration Technology

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“…In addition to the above‐mentioned mechanistic groundwork, the physicochemical properties of the dual mode sorption parameters (such as dependence of K 1 and K 2 on temperature, on systematic changes in dye molecular structure or on the nature of the polymeric substrate) have been studied extensively5–10 and the information gained has contributed materially to our understanding of the corresponding dye diffusion behavior 5‐8, 11…”

Section: Introductionmentioning

confidence: 99%

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

Iijima¹,

Petropoulos²

2006

J of Applied Polymer Sci

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Study of the dual mode mechanism of dyeing nylon with acid dyes, consisting of Langmuirtype 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.

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Sorption of Fluorinated Azo Dyes Containing Two Sulfonate Groups by a Nylon 6 Film.

Abstract: Derivatives of disodium 1-phenylazo-2-hydroxy-3,6-

Cited by 2 publications

References 9 publications

Sorption of an acid dye by silk fibre in the presence of bolaform electrolytes containing pyridine rings

Sorption of an acid dye by silk fibre in the presence of bolaform electrolytes containing pyridine rings

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

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