Past, present and future of supercritical fluid dyeing technology – an overview

Bach, E.; Cleve, E.; Schollmeyer, Eckhard

doi:10.1111/j.1478-4408.2002.tb00253.x

Cited by 157 publications

(147 citation statements)

References 56 publications

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“…[24] The affinity of the dye for the polymer is due to specific intermolecular interactions occurring between the solute and the basic sites of the macromolecular chain. In the case of scCO 2 dyeing, impregnation via partitioning is highly beneficial due to the low concentration of dye present in the CO 2 phase at any time, giving a high dye recovery yield [24,25] and enhanced diffusion rates compared to the traditional aqueous method of dyeing. [26] Exploiting CO 2 -assisted impregnation of a polymer system requires a thorough understanding of the diffusion processes under scCO 2 conditions and the consequences of variation in process conditions.…”

Section: Introductionmentioning

confidence: 99%

Dye Diffusion in Polymer Films Subjected to Supercritical CO₂: Confocal Raman Microscopy and Modelling

Fleming

Štěpánek

Kazarian

2005

Macro Chemistry & Physics

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Summary: Poly(ethylene terephthalate) films impregnated with Disperse Red 1 from a supercritical CO2 solution were studied using confocal Raman microscopy. Depth profiles of films dyed for different periods of time were measured using the oil immersion approach and concentration‐depth plots of the relative dye concentration were generated. A one‐dimensional Fickian diffusion model was used to evaluate the diffusion coefficient of the dye from the Raman microscopy data using a non‐linear least squares regression. The calculated diffusion coefficient at 200 bar and 80 °C was 6.75 ± 1.01 × 10−14 m2 · s−1.Typical example of Raman spectra acquired during depth profiling.imageTypical example of Raman spectra acquired during depth profiling.

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Section: Introductionmentioning

confidence: 99%

Dye Diffusion in Polymer Films Subjected to Supercritical CO₂: Confocal Raman Microscopy and Modelling

Fleming

Štěpánek

Kazarian

2005

Macro Chemistry & Physics

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“…Das Phänomen der Sorption von CO 2 in Polymethylmethacrylat und Polystyrol wurde ebenfalls schon beobachtet [6]. [7,8]. Dabei wurde untersucht und an Polypropylen verifiziert, inwieweit neue innere und äußere Oberflä-chen erzeugt werden können [9].…”

Section: Problemstellungunclassified

Modifizierung superabsorbierender Polymere mit hochkomprimiertem CO₂

Schulz

Cleve

Krekel

et al. 2007

Chemie Ingenieur Technik

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“…This dyeing method offers many advantages compared with conventional aqueous dyeing; no carrier or dispersing agent is required, residual dyestuff can be collected and carbon dioxide can be recycled [1][2][3]. It is an environmentally friendly technique, as it may replace the traditional wet-dyeing method [4].…”

Section: Introductionmentioning

confidence: 99%

Eco-Friendly Disperse Dyeing and Functional Finishing of Nylon 6 Using Supercritical Carbon Dioxide

Elmaaty

El-Aziz

et al. 2015

Fibers

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Abstract:In this work, a supercritical carbon dioxide assembly was successfully constructed for dyeing Nylon6 fabric. Primary experiments were carried out to confirm the possibility of bringing the dyeing up to factory scale. A series of disperse azo dyes with potential antibacterial activity were applied to dye the fabric under our study in supercritical carbon dioxide (scCO2). The factors affecting the dyeing conditions (i.e., dye concentration, time, temperature and pressure) and functional properties were discussed and compared with those in aqueous dyeing. The comparison revealed that elimination of auxiliary chemicals such as salt, carrier or dispersing agent has no diverse effect on dyeing. The color strength of the dyed fabric evaluated by using K/S measurements increased by increasing dye concentration from 2% to 6% owf. (on weight of fabric). The nylon6 fabrics dyed in supercritical carbon dioxide have good fastness properties, and especially light fastness compared with conventional exhaustion dyeing. Antibacterial activity of the dyed samples under supercritical conditions was evaluated and the results showed excellent antibacterial efficiency.

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Past, present and future of supercritical fluid dyeing technology – an overview

Cited by 157 publications

References 56 publications

Dye Diffusion in Polymer Films Subjected to Supercritical CO₂: Confocal Raman Microscopy and Modelling

Dye Diffusion in Polymer Films Subjected to Supercritical CO₂: Confocal Raman Microscopy and Modelling

Modifizierung superabsorbierender Polymere mit hochkomprimiertem CO₂

Eco-Friendly Disperse Dyeing and Functional Finishing of Nylon 6 Using Supercritical Carbon Dioxide

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Past, present and future of supercritical fluid dyeing technology – an overview

Cited by 157 publications

References 56 publications

Dye Diffusion in Polymer Films Subjected to Supercritical CO2: Confocal Raman Microscopy and Modelling

Dye Diffusion in Polymer Films Subjected to Supercritical CO2: Confocal Raman Microscopy and Modelling

Modifizierung superabsorbierender Polymere mit hochkomprimiertem CO2

Eco-Friendly Disperse Dyeing and Functional Finishing of Nylon 6 Using Supercritical Carbon Dioxide

Contact Info

Product

Resources

About

Dye Diffusion in Polymer Films Subjected to Supercritical CO₂: Confocal Raman Microscopy and Modelling

Dye Diffusion in Polymer Films Subjected to Supercritical CO₂: Confocal Raman Microscopy and Modelling

Modifizierung superabsorbierender Polymere mit hochkomprimiertem CO₂