A Novel Natural Dye Derivative for Natural Fabric Supercritical Carbon Dioxide Dyeing Technology 


Vol. 20,  No. 11, pp. 2376-2382, Nov.  2019
10.1007/s12221-019-9029-2


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  Abstract

The supercritical carbon dioxide (SC-CO2) dyeing technology is a green dyeing technology, and the usage of natural dye makes SC-CO2 dyeing technology safer and more environment-friendly. Nevertheless, after using natural dye in SC-CO2 dyeing, the color depth and fastness of dyed natural fabric are poor. In this study, alkyl and hydroxyalkyl groups were grafted onto alizarin, which is a natural dye, to elevate the color depths and fastness of alizarin-derivative-dyed natural fabric. The results demonstrate that the color depths of alkyl-alizarin-dyed and hydroxyalkyl-alizarin-dyed natural fabrics were increased. This has to do with the increase in the solubilities of alkyl alizarin and hydroxyalkyl alizarin in SC-CO2. The hydroxybutyl-alizarin-dyed wool displayed the best color depth (K/S value: 6.44). And the hydroxyalkyl-alizarin-dyed natural fabric showed good washing fastness and rubbing fastness (about 4-5 level), because that hydroxyalkyl alizarin could be linked by a covalent bond to the natural fabric.

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  Cite this article

[IEEE Style]

J. Wu, H. Zhao, M. Wang, W. Zhi, X. Xiong, L. Zheng, "A Novel Natural Dye Derivative for Natural Fabric Supercritical Carbon Dioxide Dyeing Technology," Fibers and Polymers, vol. 20, no. 11, pp. 2376-2382, 2019. DOI: 10.1007/s12221-019-9029-2.

[ACM Style]

Jinsong Wu, Hongjuan Zhao, Mingyue Wang, Weiru Zhi, Xiaoqing Xiong, and Laijiu Zheng. 2019. A Novel Natural Dye Derivative for Natural Fabric Supercritical Carbon Dioxide Dyeing Technology. Fibers and Polymers, 20, 11, (2019), 2376-2382. DOI: 10.1007/s12221-019-9029-2.

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