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Fibers 2015, 3(3), 309-322; doi:10.3390/fib3030309

Eco-Friendly Disperse Dyeing and Functional Finishing of Nylon 6 Using Supercritical Carbon Dioxide

1
Department of Textile Dyeing & Finishing, Faculty of Applied Arts, Damietta University, Damietta 34512, Egypt
2
Department of Advanced Fibro Science, Kyoto Institute of Technology, Kyoto 606-8585, Japan
3
Department of Chemistry, Faculty of science, Damietta University, Damietta 34512, Egypt
*
Author to whom correspondence should be addressed.
Academic Editor: Richard Kotek
Received: 13 June 2015 / Accepted: 22 July 2015 / Published: 4 August 2015
(This article belongs to the Special Issue Fiber Forming Polymers)
View Full-Text   |   Download PDF [698 KB, uploaded 4 August 2015]   |  

Abstract

In this work, a supercritical carbon dioxide assembly was successfully constructed for dyeing Nylon6 fabric. Primary experiments were carried out to confirm the possibility of bringing the dyeing up to factory scale. A series of disperse azo dyes with potential antibacterial activity were applied to dye the fabric under our study in supercritical carbon dioxide (scCO2). The factors affecting the dyeing conditions (i.e., dye concentration, time, temperature and pressure) and functional properties were discussed and compared with those in aqueous dyeing. The comparison revealed that elimination of auxiliary chemicals such as salt, carrier or dispersing agent has no diverse effect on dyeing. The color strength of the dyed fabric evaluated by using K/S measurements increased by increasing dye concentration from 2% to 6% owf. (on weight of fabric). The nylon6 fabrics dyed in supercritical carbon dioxide have good fastness properties, and especially light fastness compared with conventional exhaustion dyeing. Antibacterial activity of the dyed samples under supercritical conditions was evaluated and the results showed excellent antibacterial efficiency. View Full-Text
Keywords: eco-friendly disperse dyeing; polyamide 6 fabric; supercritical carbon dioxide; antimicrobial disperse dyeing; combined process eco-friendly disperse dyeing; polyamide 6 fabric; supercritical carbon dioxide; antimicrobial disperse dyeing; combined process
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Elmaaty, T.A.; El-Aziz, E.A.; Ma, J.; El-Taweel, F.; Okubayashi, S. Eco-Friendly Disperse Dyeing and Functional Finishing of Nylon 6 Using Supercritical Carbon Dioxide. Fibers 2015, 3, 309-322.

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