Abstract
The use of supercritical carbon dioxide is emerging as a potential method for achieving pollution-free dyeing. An important factor in supercritical fluid dyeing is the solubility of the dye in supercritical carbon dioxide. Our measurements show that the solubility of C. I. Disperse Red-60 dye in supercritical carbon dioxide is significantly enhanced upon addition of polar csolvents : ethanol and acetone. The solubility enhancement is attributed to the formation of hydrogen bonds between cosolvent and dye molecules. Observed solubility behavior is correlated using dilute-solution theory with lattice-fluid-hydrogen-bonding model. Needed physical and hydrogen-bonding molecular parameters are estimated using the experimental data.
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Muthukumaran, P., Gupta, R.B., Sung, HD. et al. Dye solubility in supercritical carbon dioxide. Effect of hydrogen bonding with cosolvents. Korean J. Chem. Eng. 16, 111–117 (1999). https://doi.org/10.1007/BF02699013
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DOI: https://doi.org/10.1007/BF02699013