A Novel Natural Dye Derivative for Natural Fabric Supercritical Carbon Dioxide Dyeing Technology
A Novel Natural Dye Derivative for Natural Fabric Supercritical Carbon Dioxide Dyeing Technology
复制标题
用于天然织物的新型天然染料衍生物超临界二氧化碳染色技术
DOI：
10.1007/s12221-019-9029-2
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发表时间：
2019
影响因子：
2.5
通讯作者：
Zheng Laijiu
中科院分区：
文献类型：
--
作者：
Wu Jinsong;Zhao Hongjuan;Wang Mingyue;Zhi Weiru;Xiong Xiaoqing;Zheng Laijiu
超临界CO2染色技术是一种绿色染色技术，天然染料的使用使得超临界CO2染色技术更加安全环保。然而，天然染料用于SC-CO2染色后，染色的天然织物的色深和牢度较差。本研究将烷基和羟烷基接枝到天然染料茜素上，以提高茜素衍生物染色天然织物的色深和牢度。结果表明，烷基茜素染色和羟烷基茜素染色的天然织物的颜色深度增加。这与烷基茜素和羟烷基茜素在SC-CO2中的溶解度增加有关。羟丁基茜素染色羊毛的颜色深度最好（K/S值为6.44）。羟烷基茜素染色的天然织物具有良好的耐洗牢度和摩擦牢度（约4-5级），这是由于羟烷基茜素与天然织物之间通过共价键连接。
The supercritical carbon dioxide (SC-CO2) dyeing technology is a green dyeing technology, and the usage of natural dye makes SC-CO2dyeing technology safer and more environment-friendly. Nevertheless, after using natural dye in SC-CO2dyeing, 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.