@inproceedings{1887421941cc46b6a9670db896db5b8c,
title = "Sustainable reactive dyeing of cotton fabric in green non-aqueous medium: A density function theory (DFT) modeling study",
abstract = "Sustainable reactive dyeing of cotton in green non-nucleophilic solvents was investigated. Dye fixation in the new medium was modeled using DFT calculations with the aim of understanding the role of organic bases. The novel procedure uses non-nucleophilic green solvents instead of water to eliminate the dye hydrolysis. All residuals in the spent dye bath could be conveniently recycled and reused. The three major stages in cotton reactive dyeing, cellulose swelling, dye adsorption and dye fixation were optimized respectively. Two organic bases and potassium carbonate were studied for dye fixation. The mechanisms of the amine-promoted dye fixation were modeled using density function theory (DFT) calculations. The formation of the amine-dye intermediate was elucidated and analyzed using high performance liquid chromatography (HPLC) analysis. The quaternary ammonium catalysis effect on intermediates forming was observed. A 10-cycle repeated dyeing sequence was demonstrated using Reactive orange 5 to give consistently high shade buildup, excellent colorfastness and dramatic reduction in resource consumption. The results have implications for better understanding the new hydrolysisfree and recyclable solvent dyeing process.",
keywords = "Cotton fabrics, Density functional theory (DFT), Hydrolysis-free reactive dyeing, Sustainable dyeing",
author = "Luyi Chen and Jiangang Chen and Xinhui Ruan and Suxin Xu and Yiqi Yang and Bijia Wang",
note = "Publisher Copyright: {\textcopyright} (2016) Trans Tech Publications, Switzerland.; 13th International Wool Research Conference, IWRC 2015 and AATCC Sustainability Symposium, AATCC-SS 2015 ; Conference date: 10-06-2015 Through 14-06-2015",
year = "2015",
doi = "10.4028/www.scientific.net/KEM.671.139",
language = "English (US)",
isbn = "9783038355724",
series = "Key Engineering Materials",
publisher = "Trans Tech Publications Ltd",
pages = "139--148",
editor = "Jianzhong Shao and Jiping Wang and Jiping Wang",
booktitle = "Wool and Textiles Sustainable Development",
}