Molekülbau und Haftung substantiver Farbstoffe auf Cellulose

Bach, H.; Pfeil, E.; Philippar, W.; Reich, M. E.

doi:10.1002/ange.19630750903

Cited by 40 publications

(17 citation statements)

References 19 publications

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“…Much has been written on the apparently strange substantivity of planar conjugated systems for dyeing cellulosic fibres (see for example [18,19]) and it will not be repeated in this article. The substantivity of planar anionic polysulphonated dyes for the negatively charged substrate was established empirically and a precise explanation of the phenomenon has yet to be given.…”

Section: The Uptake Of Planar Anionic 'Direct' Dyes By Cellulosic Submentioning

confidence: 99%

Dyestuff—fibre interactions

Lewis

1996

Intern J of Cosmetic Sci

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Synopsis The strength and nature of dye-fibre interactions vary according to fibre type and dye type. In the case of acid dyes for polyamide fibres, cationic dyes for acrylic fibres, disperse dyes for hydrophobic fibres, and direct dyes for cellulosic fibres, these interactions may be classified as non-covalent, a classification which includes van der Waals (VDW), electrostatic, induction, solvophobic and charge-transfer interactions. Reactive dyes are a notable exception to the above, since the interaction which is responsible for their excellent wet fastness is the dye-fibre covalent bond, however, these dyes are increasingly viewed as environmentally unfriendly due to high salt usage and residual unfixed colour. This situation may be improved by either incorporating amine sites in the cellulose or by reversing the system to incorporate reactive residues in the fibre and nucleophilic sites in the dye. Nonionic disperse dyes are valuable for hydrophobic fibres such as polyester but have made little impact on hydrophilic fibres such as silk, wool and cotton. Experiments to develop simple treatments to render the latter fibres disperse dyeable are described and the combined role of solvophobic and - interactions discussed.

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Section: The Uptake Of Planar Anionic 'Direct' Dyes By Cellulosic Submentioning

confidence: 99%

Dyestuff—fibre interactions

Lewis

1996

Intern J of Cosmetic Sci

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“…On the other hand, Bach et al 155 have put forward evidence to show that no forces between direct dyes and cellulose are operative and dye is present in the substrate only as micelles. According to these investigators, dye penetrates cellulose in a monomolecular state, but subsequently is deprived of its water of solvation, and aggregation takes place.…”

Section: B Location Of Dye and State Of Orientationmentioning

confidence: 99%

Physical Chemistry of Dyeing: State of Dye in Dyebath and in Substrate

Daruwalla

1974

The Chemistry of Synthetic Dyes

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“…It was noticed that it has a limited diffusion into the fiber insides. It is known from earlier works on substantive dyes 29 that the diffusion depends obviously on the properties of the porous zones and on the aggregation form of the dye. In the commercial product Uvitex BHT, the fluorescent dye seems to be held in a highly disperse form leading to a higher solubility than the dye calcofluor.…”

Section: Introductionmentioning

confidence: 99%

A new method to visualize and characterize the pore structure of TENCEL® (Lyocell) and other man‐made cellulosic fibres using a fluorescent dye molecular probe

Abu-Rous¹,

Varga²,

Bechtold³

et al. 2007

J of Applied Polymer Sci

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ABSTRACT:The internal porous structures of the manmade cellulosic fibers Lyocell (TENCEL 1 ), Modal, and Viscose fibers were visualized by applying fluorescence microscopy on fiber cross sections. The fiber pore structure was probed by the optical brightener Uvitex BHT, and the dye penetration depth was measured. The main differences in the pore structures of these three fiber types could be visualized. Only TENCEL shows a significant difference between dried and never-dried fibers. A fiber structure model of TENCEL was obtained, which discriminates three different porous zones with respect to dye diffusion kinetics. The results are discussed in relationship with the fiber physical and chemical properties. The dye penetration depth and kinetics in TEN-CEL fibers was found to be sensitive to the production and treatment conditions, in particular to changes in the pore system by drying, and following alkali swelling processes. The performance of surface-specific enzymatic peeling could also be observed.

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Molekülbau und Haftung substantiver Farbstoffe auf Cellulose

Cited by 40 publications

References 19 publications

Dyestuff—fibre interactions

Dyestuff—fibre interactions

Physical Chemistry of Dyeing: State of Dye in Dyebath and in Substrate

A new method to visualize and characterize the pore structure of TENCEL® (Lyocell) and other man‐made cellulosic fibres using a fluorescent dye molecular probe

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