Correlation of dye solubility in supercritical carbon dioxide

Cabral, Vladimir Ferreira; Santos, Washington Luiz Félix; Muniz, Edvani C.; Rubira, Adley F.; Cardozo‐Filho, Lúcio

doi:10.1016/j.supflu.2006.05.004

Cited by 45 publications

(22 citation statements)

References 27 publications

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“…However, according to the above investigations, many variables, as in conventional dyeing processes, had a significant influence on colour strength or dye uptake on the substrate, affecting the reproducible dyeing of rope fabrics in supercritical CO 2 fluid, especially the system pressure and temperature. Theoretically, the dissolution behaviour of dye molecules in the supercritical fluid is influenced remarkably by system pressure and temperature, especially for process parameters at around the critical point . Moreover, variation in dye dissolution behaviour usually leads to a different adsorption and diffusion (or uptake) of dye molecules on and into the substrate, which results in poor reproducibility of coloration .…”

Section: Resultsmentioning

confidence: 99%

“…Theoretically, the dissolution behaviour of dye molecules in the supercritical fluid is influenced remarkably by system pressure and temperature, especially for process parameters at around the critical point . Moreover, variation in dye dissolution behaviour usually leads to a different adsorption and diffusion (or uptake) of dye molecules on and into the substrate, which results in poor reproducibility of coloration . Therefore, it is very important and necessary to control system pressure and temperature accurately in order to achieve consistent reproducible production in supercritical CO 2 medium.…”

Section: Resultsmentioning

confidence: 99%

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Rope dyeing of fabric in supercritical carbon dioxide for commerical purposes

Yang

Liu

Zhang

et al. 2014

Coloration Technology

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A novel method for fabric rope dyeing in supercritical carbon dioxide fluid has been successfully developed for the first time for commercial purposes by employing a custom‐built machine. The influence of parameters such as system pressure, temperature, and dyeing time on fabric colour strength was investigated, and the parameters optimised. Moreover, the level dyeing property, reproducibility, and colour fastness were investigated and evaluated under various conditions. The carbon dioxide recycling efficiency and the running costs of the proposed process in comparison with conventional processes for commercial production purposes were also investigated. The rope dyeing results show significant influence of the process parameters on fabric colour strength. Satisfactory and commercially acceptable products with a good level dyeing property, high reproducibility of coloration, and good fastness, rated at 4–5 or 5 for washing and rubbing, were obtained with supercritical carbon dioxide fluid. Moreover, a carbon dioxide recycling efficiency ranging from 92 to 95.2% was possible. In comparison with conventional dyeing processes, running costs were lowered by employing the proposed process and rope dyeing machine.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Rope dyeing of fabric in supercritical carbon dioxide for commerical purposes

Yang

Liu

Zhang

et al. 2014

Coloration Technology

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“…100,103 Generally solubility is low for all dyes and is between 10 −4 and 10 −7 mol dye/mol CO 2 under the dyeing condition of 120-140˚C and 300 bar pressure which is similar to that in water. 100,103 Generally solubility is low for all dyes and is between 10 −4 and 10 −7 mol dye/mol CO 2 under the dyeing condition of 120-140˚C and 300 bar pressure which is similar to that in water.…”

Section: Dyeing In Supercritical Carbon Dioxidementioning

confidence: 82%

Advances in coloration of polyester textiles

Gulrajani

2008

Polyesters and Polyamides

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“…The available solubility data (in mole fraction) of compounds (dyes) have been collected from the literatures, which are listed in Table . In order to find the best optimum values of the special parameter of the model ( S 12 ) and the Peng–Robinson EOS (PR‐EOS) interaction parameters ( k ij and l ij ), an objective function (Eqn ) was defined and minimized using a reliable optimization method described in the paper of Asgarpour Khansary and Hallaji Sani .…”

Section: Calculation Methodsmentioning

confidence: 99%

Prediction of dyes solubility in supercritical carbon dioxide (CMM EOS)

Sani

Arif

Salehi

et al. 2014

Asia-Pacific J Chem Eng

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On the basis of the M‐factor theory, A new piece‐wise equation of state has been developed elsewhere for prediction of compressibility factor. On the basis of this model, a novel model for the special case of Tr<1.1 together with a specialized parameter was developed also. Critical modification on the model is proposed and applied in this work as a result of critical assessment of model application in solute solubility prediction in supercritical carbon dioxide. Two relationships were obtained for S12 that must be implemented together with this equation of state. Using this new modified model, the solubility prediction/correlation will be a straightforward calculation. © 2014 Curtin University of Technology and John Wiley & Sons, Ltd.

show abstract

Correlation of dye solubility in supercritical carbon dioxide

Cited by 45 publications

References 27 publications

Rope dyeing of fabric in supercritical carbon dioxide for commerical purposes

Rope dyeing of fabric in supercritical carbon dioxide for commerical purposes

Advances in coloration of polyester textiles

Prediction of dyes solubility in supercritical carbon dioxide (CMM EOS)

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