Supercritical fluid dyeing of polycarbonate in carbon dioxide
| Autor: | Thomas Gamse, Simon Alkin, Barbara Péter-Szabó, Edit Székely, Daniel Varga, Peter Gluschitz |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
chemistry.chemical_classification
Supercritical carbon dioxide General Chemical Engineering 02 engineering and technology Polymer 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Supercritical fluid 0104 chemical sciences Partition coefficient chemistry Chemical engineering Phase (matter) visual_art Polymer chemistry visual_art.visual_art_medium Physical and Theoretical Chemistry Dyeing Solubility Polycarbonate 0210 nano-technology |
| Zdroj: | The Journal of Supercritical Fluids. 116:111-116 |
| ISSN: | 0896-8446 |
| DOI: | 10.1016/j.supflu.2016.05.018 |
| Popis: | In this work, the applicability of the supercritical CO2 dyeing process on polycarbonate pellets was investigated by the use of two azo-disperse dyes; disperse red 1 (DR1) and disperse red 13 (DR13). Experiments were performed in the range of 100–300 bar and 40 °C–60 °C with 3–24 h of impregnation time. Dyeing took place in a high pressure vessel and kinetics was studied and explained. Impregnation efficiency on the polymer pellets was measured by UV–vis spectroscopy. The process was successfully applied and resulted in an entirely, equally deep-dyed polymer with excellent dyeing fixation. Arising from the different solubility and chemical structure of the dyes, their sorption kinetics was found to be different. Maximal dye uptake obtained with DR1 and DR13 were 0.010 wt% and 0.055 wt% respectively, with respect to the mass of the polymer. New solubility data for DR13 in supercritical CO2 has also been measured and partition coefficients (Kc) for the dyes between the fluid and the polymer phase were calculated. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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