Using supercritical carbon dioxide as solvent to replace water in polyethylene terephthalate (PET) fabric dyeing procedures |
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| Authors: | Aiqin Hou Bo Chen Jinjin Dai Kai Zhang |
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| Affiliation: | 1. Faculty of Applied Arts, Damietta University, 34512 Egypt;2. Faculty of Science, Damietta University, Egypt;3. Faculty of Engineering, University of Fukui, Japan;1. Textile Materials Technology, Department of Textile Technology, The Swedish School of Textiles, Faculty of Textiles, Engineering and Business, University of Borås, 501 90 Borås, Sweden;2. Department of Applied Science and Technology, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy;3. College of Textile and Clothing Engineering, Soochow University, 215006 Suzhou, Jiangsu, China;4. Swedish Centre for Resource Recovery, University of Borås, 501 90 Borås, Sweden;1. Department of Colour Science, School of Chemistry, University of Leeds, LS2 9JT, UK;2. School of Chemistry, University of Leeds, LS2 9JT, UK;3. Centre of Industrial Collaboration, University of Leeds, Leeds LS2 9JT, UK;1. Key Laboratory of Science & Technology of Eco-Textiles, Ministry of Education, Donghua University, 2999 North Renming Road, 201620 Shanghai, China;2. College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, 2999 North Renming Road, 201620 Shanghai, China;3. Department of Textiles, Merchandising & Fashion Design, HECO Building, University of Nebraska-Lincoln, 68583-0802 Lincoln, USA;4. Department of Biological Systems Engineering and Nebraska Center for Materials and Nanoscience, HECO Building, University of Nebraska-Lincoln, 68583-0802 Lincoln, USA;1. Key Laboratory of Optoelectronic Materials Chemistry and Physics, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, China;2. University of Chinese Academy of Sciences, Beijing, China |
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| Abstract: | Dyeing fabrics in supercritical carbon dioxide (SCD) instead of water can save energy, reduce water use and prevent pollution. The special pilot plant was designed to test dyeing procedures in supercritical carbon dioxide and the analyses of the results indicate major benefits as compared to water based procedures. The dyeing of polyethylene terephthalate (PET) fabric in supercritical carbon dioxide using special pilot plant was investigated. Disperse dye, C.I. (color index) Disperse Blue 79, was used in this study. After dyeing, rinsing in supercritical carbon dioxide, which removes the excess dyes, was also discussed. At the same dyeing conditions, K/S (color yield) of dyed fabric significantly increased with increasing the dye concentration from 1% o.w.f. (on weight of fabric) to 5% o.w.f. Dyeing temperature and pressure had a strong influence on the color yield. When the temperature rose above 110 °C, the increase in color yield was obvious. At 20 MPa, 120–130 °C, dyeing reached equilibrium after 60 min. The excess dye of the dyed PET fabric was small. The suitable condition in supercritical carbon dioxide for removal of excess dye from the dyed fabric was 70 °C, 20 MPa. The PET fabric dyed in supercritical carbon dioxide had good fastness and physical properties. |
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