Constructing of Dyes Suitable for Eco-friendly Dyeing Wool Fibers in Supercritical Carbon Dioxide
Constructing of Dyes Suitable for Eco-friendly Dyeing Wool Fibers in Supercritical Carbon Dioxide
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超临界二氧化碳环保羊毛纤维染色染料的构建
DOI：
10.1021/acssuschemeng.8b03976
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发表时间：
2018
影响因子：
8.4
通讯作者：
Zheng Laijiu
中科院分区：
文献类型：
--
作者：
Li Feixia;Lv Lihua;Wang Xuejun;Zhi Weiru;Lin Xinhua;Yan Jun;Zhao Hongjuan;Song Fengling;Sun Yanfeng;Xiong Xiaoqing;Zheng Laijiu
与传统的水染色相比，超临界二氧化碳（scCO 2）染色更环保。超临界CO2广泛用作合成纤维染色中的绿色溶剂。然而，涉及在scCO 2中染色天然纤维的研究很少。常用的方法导致染色设备的腐蚀。因此，开发适合超临界CO2染色的新型专用染料是必要的;此外，深入了解超临界CO2染色机理对于促进羊毛纤维染料的设计和合成具有重要意义。在我们前期工作的基础上，提出了一种可能的染色机理，即染料与角蛋白之间存在疏水相互作用。偶氮染料中的N-N键扭曲促进染料嵌入蛋白质中α螺旋的空间。根据所提出的机理，合成了两种新的偶氮分散染料（偶氮噻唑-N（CH 3）2和偶氮噻唑-OCH 3），这些染料使羊毛纤维在scCO 2中染色。同时，琥珀酰亚胺酯的引入，
Compared with traditional water dyeing, supercritical carbon dioxide (scCO2) dyeing is more environmentally benign. scCO2 is widely used as a green solvent in dyeing synthetic fibers. However, studies involving dyeing natural fibers in scCO2 are scarce. The commonly used methods result in corrosion of the dyeing equipment. Thus, the development of new special dyes suitable for scCO2 dyeing is necessary; in addition, insight into the dyeing mechanism is important in promoting the design and synthesis of dyes for wool fibers in scCO2. On the basis of our previous work, a possible dyeing mechanism in which the dyes exhibit hydrophobic interaction with keratins is proposed. The N═N bond twisting in azo dyes promotes the dyes embedding into the spaces of the alpha helices in proteins. According to the proposed mechanism, two new azo disperse dyes (azo thiazole-N(CH3)2 and azo thiazole-OCH3) were synthesized; these dyes enable the dyeing of wool fibers in scCO2. Meanwhile, the introduction of a succinimidyl est...