Artículo
High-pressure phase behaviour of the system (CO2 + C.I. Disperse Orange 30 dye)
dos Santos, J.C.; Mazzer, H. R.; Machado, G. D.; Andreaus, J.; Cabral, V. F.; Zabaloy, Marcelo Santiago
; Cardozo Filho, L.
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Fecha de publicación:
08/05/2012
Editorial:
Academic Press Ltd - Elsevier Science Ltd
Revista:
Journal of Chemical Thermodynamics
ISSN:
0021-9614
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
The dyeing of textile fibres of poly-ethylene terephthalate (PET) in a supercritical medium is an environmentally friendly technological alternative to the conventional water-based dyeing process. In this work, the solubility of the monoazo disperse dye 4-((2,6-dichloro-4-nitrophenyl) azo)-N-(cyanoethyl)-N- (acetoxyethyl) aniline (CAS number 5621-31-4, also known as "C.I. Disperse Orange 30") in supercritical carbon dioxide (SC-CO 2) was experimentally studied within a dye mole fraction range from 6.55·10 -6 to 9.31·10 -6 and over the temperature range from (303.15 to 333.15) K. The resulting measured solid-fluid transition pressures fell in the range from (9.93 to 14.82) MPa. The measurements were performed using the static-synthetic method. The dye solubility in carbon dioxide was found to increase with increasing pressure. The experimental results were correlated with a model that combines the Peng-Robinson equation of state for describing the fluid phase and a standard equation for the fugacity of the pure dye in solid state. The reference state for such equation is the sublimation curve of the pure dye.
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Articulos(PLAPIQUI)
Articulos de PLANTA PILOTO DE INGENIERIA QUIMICA (I)
Articulos de PLANTA PILOTO DE INGENIERIA QUIMICA (I)
Citación
dos Santos, J.C.; Mazzer, H. R.; Machado, G. D.; Andreaus, J.; Cabral, V. F.; et al.; High-pressure phase behaviour of the system (CO2 + C.I. Disperse Orange 30 dye); Academic Press Ltd - Elsevier Science Ltd; Journal of Chemical Thermodynamics; 48; 8-5-2012; 284-290
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